The County of Isenburg was a region of Germany located in southern present-day Hesse, located in territories north and south of Frankfurt. The states of Isenburg emerged from the Niederlahngau (located in the Rhineland-Palatinate), which partitioned in 1137 into Isenburg-Isenburg and Isenburg-Limburg-Covern. These countships were partitioned between themselves many times over the next 700 years.

Isenburg (pink, right) and Lower Isenburg (pink, left) around 1400

House of Isenburg

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Ruins of the Castle at Isenburg (Lower Isenburg)

The House of Isenburg was an old aristocratic family of medieval Germany, named after the castle of Isenburg in Rhineland-Palatinate. Occasionally referred to as the House of Rommersdorf before the 12th century, the house originated in the Hessian comitatus of the Niederlahngau in the 10th century. It partitioned into the lines of Isenburg-Isenburg and Isenburg-Limburg-Covern in 1137, before partitioning again into smaller units, but by 1500 only the lines of Isenburg-Büdingen (in Upper Isenburg) and Lower Isenburg remained. In 1664 the Lower Isenburg branch died out. The Büdingen line continued to partition, and by the beginning of the 19th century the lines of Isenburg-Büdingen, Isenburg-Birstein, Isenburg-Meerholz and Isenburg-Wächtersbach existed. Today still exist the (Roman Catholic) princes of Isenburg (at Birstein), the (Lutheran) princes of Ysenburg (at Büdingen and Ronneburg) and the (Lutheran) counts of Ysenburg-Philippseich.

"Family tree" of the Isenburg countships

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Büdingen Castle
 
Castle Ronneburg, Hesse
 
Birstein Castle
 
Wächtersbach Castle
 
Meerholz Castle at Gelnhausen
 
Philippseich Castle at Dreieich

Isenburg, the original countship was divided upon the death of Count Rembold II in 1137 into:

Principality of Isenburg

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Coat of Arms of the Principality of Isenburg

It was not until 1806 that there was a state called simply "Isenburg". When the Holy Roman Empire was defeated by Napoleon I of France in that year, the empire was abolished and the Confederation of the Rhine was established amongst the various German states. As an incentive to join the Confederation, it was stated that any state which joined could mediatise their neighbours. Prince Charles of Isenburg-Birstein joined the Confederation and was granted the mediatized Isenburgian Countships of Isenburg-Büdingen, Isenburg-Meerholz, Isenburg-Philippseich, and Isenburg-Wächtersbach. His Principality was renamed to Isenburg.

The Principality continued under the rule of Prince Charles through the Napoleonic era, but was mediatised by Austria in December 1813, at the insistence of King Frederick William III of Prussia, who was angered that Isenburg had raised a regiment for French service by recruiting Prussian deserters and vagabonds.[1] Isenburg was one of only three original member princes of the Empire to be mediatized at the end of the Napoleonic era (the others being Leyen and prince-primate Dalberg, Prince of Aschaffenburg). This decision was confirmed at the Congress of Vienna. The lands of the principality were divided between the Grand Duchy of Hesse-Darmstadt and the Electorate of Hesse-Kassel (or Hesse-Cassel).

Rulers

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Partitions of Isenburg under House of Isenburg rule

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County of Isenburg
(1041-1199)
      
 
County of
Kempenich

(1st creation)
(1137-1153)
County of Kobern
(1137-1306)
female-branch of Isenburg-Vianden from 1275
      
                    
 
County of
Braunsberg

(1199-1388)
Renamed as:
County of
Wied

(1388-1462)
      
 
County of
Kempenich

(2nd creation)
(1199-1430)
 
County of
Lower Isenburg

(1218-1502)
      
 
County of
Limburg

(1227-1406)
      
 
County of Cleeberg
(1167-1340)
County of
Grenzau

(1st creation)
(1278-1292)
County of
Arenfels

(1278-1403)
      
      
County of
Grenzau

(2nd creation)
(1340-1439)
 
County of Büdingen
(1st creation)
(1340-1511)
Part of the
County of
Braunsberg

(1371-1388)
Renamed as:
County of
Wied

(1388-1462)
To
Archbishopric
of Trier
To Lords of
Schöneck
(1424-1434),
Archbishopric
of Trier

(1434)
and Counts of
Virneburg
(from 1434)
To Nassau-Beilstein
(1439-1446)
and Archbishopric
of Trier

(1446-1460)
      
To County of Wied To County of Wied
County of
Neumagen

(1502-1563)
 
County of
Grenzau

(3rd creation)
(1502-1664)
County of Ronneburg
(1511-1601)
County of Birstein
(1st creation)
(1511-1664)
To County of Sayn-Homburg
      
County of Büdingen
(2nd creation)
(1628-1806)
(mediatized to Isenburg-Birstein in 1806)
             
To Archbishopric of Trier, Archbishopric of Cologne and Abbots of Fulda       
County of Marienborn
(1673-1725)
      
 
County of Meerholz
(1673-1806)
(mediatized to Isenburg-Birstein in 1806)
              County of Offenbach
(1628-1718)
County of Wachtersbach
(1673-1806)
(mediatized to Isenburg-Birstein in 1806)
              County of Philippseich
(1711-1806)
(mediatized to Isenburg-Birstein in 1806)
County of Birstein
(2nd creation)
(1685-1744)
Raised to
Principality of Birstein
(1744-1806)
 
Principality of Isenburg
(Isenburg-Birstein line)
(1806-1815)
(mediatized to Austria in 1815
and Hesse in 1816)

Table of rulers

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Ruler Born Reign Ruling part Consort Death Notes
Gerlach (I)[2] 966 1002 – 1018 County of Lower Lahngau Unknown
at least two children
1018
aged 51–52
First known member of the family.
Rembold (I)[2] c.1010?
Son of Gerlach (I)
1018 – 1072 County of Isenburg (?) Unknown
at least one child
1072
aged 61–62?
First known members of the family. They possibly held already the county of Isenburg
Gerlach (II)[2] c.1010?
Son of Gerlach (I)
1018 – 1070 Unmarried c.1070
aged 59–60?
Rembold (II)[2] 1058
Son of Rembold (I)
1072 – 1090 Unknown
at least two children
c.1090
aged 51–52
Gerlach I c.1060
Son of Rembold (II)
1090 – 1115 County of Isenburg Unknown
at least two children
c.1115[3]
aged 49–50
First members of the family firmly documented as Counts of Isenburg.[4]
Rembold I c.1060
Son of Rembold (II)
Unmarried c.1115[3]
aged 49–50
Rembold II c.1080
First son of Gerlach I[5]
1115 – 1137 County of Isenburg Catharina of Arnstein
five children
1137
aged 56–57
Brothers and co-rulers.
Gerlach II c.1080
Second son of Gerlach I[5]
1115 – 1120 Unmarried c.1120[5]
aged 39–40
Gerlach III c.1110?
First son of Rembold II and Catharina of Arnstein
1137 – 1158 County of Kobern Jutta of Are
three children
1158
aged 47–48?
Sons of Rembold II, divided their inheritance. Siegfried didn't have documented children, so his land may have returned to Isenburg. After the childless death of Rembold III, his nephew Rembold IV kept Isenburg-Isenburg.
Rembold III c.1110?
Second son of Rembold II and Catharina of Arnstein
1137 – 1162 County of Isenburg Unmarried 1162
aged 51–52?
Siegfried c.1110?
Third son of Rembold II and Catharina of Arnstein
1137 – 1153 County of Kempenich Justina of Kempenich
no children
1153
aged 42–43?
Rembold IV c.1130?
First son of Gerlach III and Jutta of Are
1153-1175 County of Kempenich Unknown
two children
c.1175
aged 44–45?
Children of Gerlach III, divided their inheritance. Rembold inherited his childless uncles' possessions, while Gerlach inherited the property of their father.
1162-1175 County of Isenburg
Gerlach IV[6] c.1130?
Second son of Gerlach III and Jutta of Are
1158 – 1167 County of Kobern Unknown of Covern
three children

Unknown of Leiningen
two children
1167
aged 36–37?
Gerlach V[6] c.1150?
First son of Gerlach IV
1167 – 1217 County of Kobern Unknown
two children
1217
aged 66–67?
Children of Gerlach IV, divided their inheritance.
Henry I c.1150?
Second son of Gerlach IV
1167 – 1227 County of Cleeberg Irmgard of Büdingen
(d.c.1220)
eight children
1227
aged 76–77?
Rembold V c.1160?
First son of Rembold IV
1175 – 1215 County of Kempenich Hedwig, Lady of Kempenich
two children
c.1215[7]
aged 59–60?
Sons of Rembold IV, may have ruled jointly until 1199, when they made official the division of the inheritance.
Bruno I c.1160?
First son of Rembold IV
1175 – 1210 County of Braunsberg Theodora of Wied
(d.1218)
four children
1210[8]
aged 49–50?
Bruno II 1176
Son of Bruno I and Theodora of Wied
1210 – 1255 County of Braunsberg Johanna
two children
1255[9]
aged 78–79?
Salentin I c.1190
First son of Rembold V and Hedwig of Kempenich
1215 – 1219 County of Lower Isenburg Unknown
at least one child
1219
aged 28–29
Children of Rembold V, divided their inheritance.
Theodoric I c.1190
Second son of Rembold V and Hedwig of Kempenich
1215 – 1251 County of Kempenich Judith of Blankenheim
(d.1252)
one child

Adelaide
(d.1258)two children
1251
aged 60–61?
Rosemann c.1200?
Third son of Rembold V and Hedwig of Kempenich
1215 – 1264 Kunigunda of Büdingen-Gelnhausen
(d.c.1250)
one child
1264
aged 63–64?
Gerlach VI c.1170
First son of Gerlach V
1217 – 1235 County of Kobern Judith
(d. July 1253)
two children
c.1235
aged 64–65
Sons of Gerlach V, possibly ruled jointly.
Henry I c.1170
Second son of Gerlach V
Unmarried c.1235
aged 64–65
Henry II c.1200?
First son of Henry I and Irmgard of Büdingen
1220 – 29 September 1278 County of Cleeberg Matilda of Hochstaden
(d.1264)
1246
eight children
29 September 1278
aged 77–78?
Sons of Henry I, rule jointly until 1258, when they officially divided the land between them.
Gerlach I[10] c.1210?
Second son of Henry I and Irmgard of Büdingen
1220 – January 1289 County of Limburg Imagina of Blieskastel
(1233-1281)
five children
January 1289
Black Forest
aged 78–79?
Henry II c.1210
Son of Gerlach VI and Judith
1235 – 1269 County of Kobern Matilda
c.1235
no children
1269
aged 58–59
Didn't have children, and the county passed to his sister.
Regency of Theodoric I, Count of Kempenich (1219-1224) Like his uncle, regent and namesake in Lower Isenburg, he may have been also involved in the government of Kempenich.
Theodoric the Younger c.1210?
Son of Salentin I
1219 – 1273 County of Lower Isenburg Judith of Merenberg
(d.1263)
four children
1273[11]
aged 62–63?
Bruno III c.1210
Son of Bruno II and Johanna
1255 – 29 September 1278 County of Braunsberg Sophia of Runkel
(d. 26 March 1266)
one child

Isolda of Heinsberg
(d.c.1290)
c.1270
two children
29 September 1278[12]
aged 67–68?
Theodoric II c.1240?
Son of Theodoric I and Judith of Blankenheim
1264 – 1276 County of Kempenich Unmarried 1276
aged 35–36?
Children of Theodoric II, possibly ruled jointly.
Gerard I c.1255
Son of Theodoric I and Adelaide
1264 – 1287 Beatrice
(d.c.1275)
four children
1287
aged 31–32?
Cecilia[13] c.1210
Daughter of Gerlach VI and Judith
1269 – 1275 County of Kobern Frederick of Vianden
c.1225?
at least one child
c. 1275
aged 64–65
Sister of Henry II, inherited Kobern.
Salentin II c.1230?
Son of Theodoric and Judith of Merenberg
1275 – 1297 County of Lower Isenburg Agnes of Runkel
(d.1316)
ten children
1297
aged 66–67
Frederick (II)[14] c.1230?
Son of Frederick of Vianden and Cecilia
1275 – 1281 County of Kobern Irmgard of Esch
(1220-1292)
c.1250
four children
1281
aged 46–47?
Regency of Isolda of Heinsberg (c.1278-1284) Associated his son Bruno to the county, but he predeceased him.
John I c.1270
Son of Bruno III and Isolda of Heinsberg
29 September 1278 – 1327 County of Braunsberg Agnes of Lower Isenburg
(d.1316)
1294
seven children

Margaret of Vickerode
(d.1324)
no children
1327
aged 56–57
Bruno IV c.1305
Son of John I and Agnes of Lower Isenburg
c.1320 – 23 August 1325 Heilwig of Katzenelnbogen
(d.1346)
2 December 1312
four children
23 August 1325
aged 19–20
Louis   c.1250?
First son of Henry II and Matilda of Hochstaden
29 September 1278 – 1304 County of Cleeberg Heilwig of Tübingen-Giessen
(d.c.1295)
seven children
1304
aged 53–54
Sons of Henry II, divided the land between them. Eberhard left no heirs and his portion was inherited by his brother Louis.
Gerlach I c.1250?
Second son of Henry II and Matilda of Hochstaden
29 September 1278 – 1305 County of Arenfels Elisabeth of Clèves
(1236-1290)
five children
c.1305
aged 54–55?
Eberhard c.1250?
Third son of Henry II and Matilda of Hochstaden
29 September 1278 – 25 November 1292 County of Grenzau Isolda of Heinsberg
(d.c.1290)
one child
25 November 1292
aged 41–42?
Grenzau annexed to Cleberg
Robin c.1250?
Son of Frederick and Irmgard of Esch
1281 – 1306 County of Kobern Elisabeth of Eppstein
(d.1320)
26 May 1272
Kobern-Gondorf
no children
1306
aged 55–56?
Left no descendants. After his death, Kobern was annexed to the County of Cleeberg.
Kobern annexed to Cleberg
Theodoric III c.1270?
First son of Gerard I and Beatrice
1287 – 1325 County of Kempenich Kunigunde of Solms
(d.1344)
two children
c.1325
aged 54–55
Sons of Gerard I, ruled jointly.
Simon I c.1270?
Second son of Gerard I and Beatrice
1287 – 1320 Agnes of Trier
1293
two children
c.1320
aged 49–50?
John I the Blind   1266
Son of Gerlach I and Imagina of Blieskastel
January 1289 – 19 September 1312 19 September 1312
aged 45–46
County of Limburg Elisabeth of Geroldseck-Veldenz
(1266-1285)
two children

Uda of Ravensberg
25 August 1292
five children
Salentin III c.1280?
Son of Salentin II and Agnes of Runkel
1297 –1351 County of Lower Isenburg Catharina
one child

Matilda of Isenburg-Kobern
(d.1350)
1304
six children
1351
aged 70–71?
Lothar c.1290
Son of Louis and Heilwig of Tübingen-Giessen
1304 – 4 February 1341 County of Cleeberg Isengard of Falkenstein-Münzenberg
1318
five children
4 February 1341
aged 50–51?
Theodoric c.1280?
First son of Gerlach I and Elisabeth of Clèves
1305 – 1334 County of Arenfels
(at Herschbach)
Hedwig of Neuenahr
(d.c.1330)
14 August 1304
five children
1334
aged 53–54?
Sons of Gerlach I, divided their inheritance.
John c.1280?
Second son of Gerlach I and Elisabeth of Clèves
1305 – 17 November 1348 County of Arenfels
(at Arenfels proper)
Catharina
no children

Jutta of Arscheid
(d.c.1385)
no children
17 November 1348
aged 67–68?
Gerlach II the Elder[15] c.1295
Son of John I and Uda of Ravensberg
19 September 1312 – 14 April 1355 County of Limburg Agnes of Nassau-Siegen
1312
three children

Kunigunde of Wertheim
20 December 1323
eight children
14 April 1355
aged 59–60
Simon II c.1290?
First son of Theodoric III and Kunigunde of Solms
1325 – 1339 County of Kempenich Catharina of Sayn
(d.c.1345)
one child
1339
aged 48–49?
Cousins, ruled jointly.
Theodoric IV the Arsonist c.1290?
Second son of Theodoric III and Kunigunde of Solms
1329 – 1341 Unmarried 1341
aged 50–51?
Gerard II c.1290
Son of Simon I and Agnes of Trier
1329 – 1335 c.1335
aged 44–45?
William I c.1315
Son of Bruno IV and Heilwig of Katzenelnbogen
1327 – 17 July 1383 County of Braunsberg Agnes of Virneburg
(d.1352/3)
1329
(annulled 12 September 1351)
five children

Johanna of Jülich
(d.1362)
27 July 1354
one child

Lysa, Countess of Isenburg-Arenfels
11 November 1362
two children
17 July 1383[16]
aged 67–68
Grandson of John I.
Simon III c.1310?
Son of Simon II and Catharina of Sayn
1341 – 1360 County of Kempenich Hedwig of Schönberg
(d.1367)
six children
c.1360
aged 49–50?
Henry I[17] 1320
First son of Lothar and Isengard of Falkenstein-Münzenberg
4 February 1341 – 1379 County of Büdingen Adelaide of Hanau
29 July 1332
six children
1379
aged 58–59
Sons of Lothar, divided their inheritance.
Philip I c.1320
Second son of Lothar and Isengard of Falkenstein-Münzenberg
4 February 1341 – 22 March 1370 County of Grenzau Margaret of Katzenelnbogen
(d.9 July 1370)
1338
two children
22 March 1370
aged 49–50
Gerlach II c.1310?
Son of Theodoric and Hedwig of Neuenahr
17 November 1348 – 14 August 1371 County of Arenfels Elisabeth of Braunshorn
(d.15 November 1339)
six children

Demut of Roesberg
(d.c.1365)
two children
14 August 1371
aged 60–61?
Salentin IV c.1320
Son of Salentin III and Matilda of Isenburg-Kobern
1351 – 1364 County of Lower Isenburg Catharina of Solms-Sponheim
25 February 1341
two children
1364
aged 43–44
Gerlach III the Younger[18] c.1325
First son of Gerlach II and Kunigunde of Wertheim
14 April 1355 – April 1366 County of Limburg Elizabeth of Falkenstein
(d. 9 April 1366)
9 November 1356
no children
April 1366
aged 40–41
Died of Black Death, without male heirs.
Simon IV c.1340?
First son of Simon III and Hedwig of Schönberg
1360 – 1414 County of Kempenich Unmarried 1414
aged 73–74?
Sons of Simon III, ruled jointly. The death of the last one of them with no male descendants led to the annexation of the land to the Lords of Schöneck.
Theodoric V c.1340?
Second son of Simon III and Hedwig of Schönberg
1360 – 1378 1378
aged 37–38?
John c.1340?
Third son of Simon III and Hedwig of Schönberg
1360 – 1424 Gertrude of Hückelhoven
(d.1421)
one child
1424
aged 37–38?
Henry c.1340?
Fourth son of Simon III and Hedwig of Schönberg
1360 – 1388 Elisabeth of Schönkeen
no children
1388
aged 47–48?
Salentin V c.1345
Son of Salentin IV and Catharina of Solms-Sponheim
1364 – 30 November 1420 County of Lower Isenburg Adelaide of Isenburg-Arenfels
6 May 1371
ten children
30 November 1420
aged 74–75
John II c.1330?
Second son of Gerlach II and Kunigunde of Wertheim
April 1366 – 26 January 1406 County of Limburg Hildegard of Saarwerden
(d.1419)
two children
26 January 1406
aged 75–76
Originally went into clergy. However, after his brother's death with no heirs, and with the permission of Pope Urban V, John put aside the office of Canon of Trier Cathedral and took over the rule of Limburg. He left no male heirs. The land went to the Archbishopric of Trier.
Isenburg-Limburg was annexed to the Archbishopric of Trier
Eberhard 1356
Son of Philip I and Margaret of Katzenelnbogen
22 March 1370 – 1399 County of Grenzau Matilda of the Mark
(d.6 August 1406)
1371
five children
1399
aged 42–43
Lysa c.1350?
Daughter of Gerlach II and Demut of Roesberg
14 August 1371 – 30 November 1403 County of Arenfels William I, Count of Isenburg-Braunsberg
11 November 1362
two children
30 November 1403
aged 52–53?
Arenfels was inherited by Braunsberg/Wied
John I 1325
Son of Henry I and Adelaide of Hanau
1379 – 24 February 1395 County of Büdingen Sophia of Wertheim
(d.1389)
1355
two children
24 February 1395
aged 69–70
William II 1352
Son of William I and Agnes of Virneburg
17 July 1383 – 1409 County of Braunsberg
(until 1388)

County of Wied
(from 1388)
Unmarried c.1409 Left no descendants.
John II 1360
Son of John I and Sophia of Wertheim
24 February 1395 – 1408 County of Büdingen Margaret of Katzenelnbogen
1385
two children
1408
aged 47–48
Philip II 1376
Son of Eberhard and Matilda of the Mark
1399 – 1440 County of Grenzau Catharina of Lower Isenburg
(d.15 July 1441)
17 January 1395
no children
1440
aged 75–76
His childless death determined that the county was inherited by his nephews from Nassau-Beilstein, sons of his elder sister Matilda. In 1460, through his other sister Maria, her descendants would recover this county to Isenburg property.
Annexed to the County of Nassau-Beilstein (1439), to the Archbishopric of Trier (1446) and the County of Lower Isenburg (1460)
Diether 1390
Son of John II and Margaret of Katzenelnbogen
1408 – 20 November 1461 County of Büdingen Elisabeth of Solms-Braunfels
26 July 1409
eight children
20 November 1461
aged 70–71
Gerlach c.1365
Son of William I and Lysa of Isenburg-Arenfels
1409 – 1413 County of Wied Agnes of Isenburg-Büdingen
27 September 1376[19]
four children
1413
aged 47–48
Half-brother of William II, ruled in Arenfels since 1403.
William III c.1380?
First son of Gerlach and Agnes of Isenburg-Büdingen
1413 – 22 October 1462 County of Wied
(at Wied and 1/2 Arenfels)
Margaret of Moers
no children

Philippa of Heinsberg
(d.14 January 1464)
10 April 1402
no children
22 October 1462[19]
aged 81–82?
Sons of Gerlach, divided their inheritance. John left his inheritance to his daughter Anastasia, who married Dietrich IV, Lord of Runkel. After William's death, his part of the domain went to Dietrich IV, inheritor of the by then dead spouse's patrimony.
John II c.1380?
Second son of Gerlach and Agnes of Isenburg-Büdingen
1413 – 1454 County of Wied
(at Braunsberg and 1/2 Arenfels)
Agnes of Westerburg
(d.1415)
1400
two children

Kunigunde of Westerburg
(d. 2 February 1428)
1415
no children

Kunigunde of Saffenberg
(d.1454)
1428
no children
1454
aged 73–74?
Wied and 1/2 Arenfels annexed to the Runkel family
Salentin VI c.1380?
Son of Salentin V and Adelaide of Isenburg-Arenfels
30 November 1420 – 1458 County of Lower Isenburg Adelaide of Isenberg-Grenzau
no children

Maria of Isenberg-Grenzau
ten children
1458
aged 77–78?
Hedwig c.1405?
Daughter of John and Gertrude of Hückelhoven
1424 – 1430 County of Kempenich Peter of Schöneck
1411
at least one child
c.1430
aged 24–25?
Heir of Kempenich, married the Lord of Schöneck, who eventually won the War of Succession that followed John's death in 1424.
Kempenich annexed to the Lordship of Schöneck (1424-1434), the Archbishopric of Trier (1434) and then to the County of Virneburg
Anastasia c.1410
Daughter of John II and Agnes of Westerburg
1454 – 1460 County of Wied
(at Braunsberg and 1/2 Arenfels)
Theodoric IV, Lord of Runkel
1427
no children
1460
aged 49–50
Inherited her father's domains. After her death in 1460 the Runkel family inherited her part of the land, and the other would be inherited after her uncle William II's death.
Braunsberg and 1/2 Arenfels annexed to the Runkel family
Gerlach I c.1410?
Son of Salentin VI and Maria of Isenberg-Grenzau
1458 – 6 May 1488 County of Lower Isenburg Jutta of Eppenstein
(d.1451)
four children
6 May 1488
aged 77–78?
Louis II 1422
Son of Diether and Elisabeth of Solms-Braunfels
20 November 1461 – 4 June 1511 4 June 1511
Büdingen
aged 88–89
County of Büdingen Maria of Nassau-Wiesbaden-Idstein
1 December 1452
ten children
Gerlach II c.1450
First son of Gerlach I and Jutta of Eppenstein
6 May 1488 – 18 July 1502 County of Lower Isenburg Hildegard von Zirk
(1430-1478)
seven children
18 July 1502
aged 51–52
Sons of Gerlach II, ruled jointly.
James 1456
Third son of Gerlach I and Jutta of Eppenstein
6 May 1488 – 17 January 1505 Unmarried 17 January 1505
aged 48–49
Salentin VII c.1470
First son of Gerlach II and Hildegard von Zirk
18 July 1502 – 24 September 1534 County of Neumagen Elisabeth of Hunolstein-Neumagen
(1475-4 June 1538)
nine children
24 September 1534
aged 63–64
Children of Gerlach II, divided their inheritance after their uncle's death in 1505.
Gerlach III c.1490
Second son of Gerlach II and Hildegard von Zirk
18 July 1502 – 9 September 1530 County of Grenzau Anastasia of Moers
(d.24 October 1557)
5 July 1494
eleven children
9 September 1530
aged 39–40
Philip I 20 March 1467
Büdingen
First son of Louis II and Maria of Nassau-Wiesbaden-Idstein
4 June 1511 – 22 February 1526 County of Ronneburg Amalia of Rieneck
19 November 1495
Büdingen
six children
22 February 1526
Büdingen
aged 58
Sons of Louis II, divided the county between them.
John III[20] 1476
Büdingen
Third son of Louis II and Maria of Nassau-Wiesbaden-Idstein
4 June 1511 – 18 May 1533 County of Birstein Anna of Schwarzburg-Blankenburg
17 June 1516
Arnstadt
seven children
18 May 1533
Büdingen
aged 56–57
Anton I   2 August 1501
Büdingen
Son of Philip I and Amalia of Rieneck
22 February 1526 – 25 October 1560 County of Ronneburg Elisabeth of Wied
19 October 1523
Wied
sixteen children

Katharina Gumpel
(1530-18 September 1559)
16 February 1554
four children
25 October 1560
Büdingen
aged 59
Regency of Anastasia of Moers (1530-1535)
Henry the Elder 5 January 1521
Son of Gerlach III and Anastasia of Moers
9 September 1530 – 1553 County of Grenzau Margaret of Wertheim
(d.25 March 1538)
2 September 1533
five children
1553
aged 31–32
Reinhard   1518
Büdingen
First son of John III and Anna of Schwarzburg-Blankenburg
18 May 1533 – 28 February 1568 County of Birstein Elisabeth of Waldeck-Wildungen
1542
one child

Margaret of Mansfeld
(1520-1573)
4 May 1551
Rudolstadt
no children
28 February 1568
Offenbach am Main
aged 49–50
Sons of John III, ruled jointly.
Philip II 23 May 1526
Büdingen
Third son of John III and Anna of Schwarzburg-Blankenburg
18 May 1533 – 5 April 1596 Irmengard of Solms-Braunfels
31 October 1559
Birstein
ten children
5 April 1596
Birstein
aged 69
Louis III 30 May 1529
Büdingen
Fourth son of John III and Anna of Schwarzburg-Blankenburg
18 May 1533 – 7 February 1588 Anna Sybilla of Schwarzburg
(25 October 1540 – 3 August 1578)
24 June 1571
Arnstadt
four children

Maria of Hohnstein
(1558-2 February 1586)
13 August 1581
Offenbach am Main
two children
7 February 1588
Offenbach am Main
aged 58
Salentin VIII c.1520
Second son of Salentin VII and Elisabeth of Hunolstein-Neumagen
24 September 1534 – 1544 County of Neumagen Unmarried 1544
aged 43–44
Sons of Salentin VII, ruled jointly. After their childless deaths, the county is inherited by their sister.
Henry c.1534
Third son of Salentin VII and Elisabeth of Hunolstein-Neumagen
24 September 1534 – 13 February 1554 Antonia Penelope van Brederode
(d.30 June 1591)
4 September 1547
ten children
13 February 1554
aged 53–54
John Henry 1534
Second son of Henry and Margaret of Wertheim
1553 – 15 November 1565 County of Grenzau Erica of Manderscheid-Schleiden
(d.23 December 1587)
22 August 1563
Grenzau
no children
15 November 1565
aged 30–31
Johannetta c.1500
Daughter of Salentin VII and Elisabeth of Hunolstein-Neumagen
13 February 1554 – 8 August 1563 County of Neumagen William I, Count of Sayn-Wittgenstein
1522
seven children
8 August 1563
aged 53–54
Neumagen annexed to the County of Sayn
George 10 September 1528
Ronneburg
Second son of Anton I and Elisabeth of Wied
25 October 1560 – 29 June 1577 Isenburg-Ronneburg
(from 1566 in Ronneburg)
Barbara of Wertheim
(1531-17 September 1600)
21 May 1552
no children
29 June 1577
Wertheim
aged 48
Sons of Anton, divided their patrimony, Henry, the last surviving brother, reunited it, but left no descendants. After his death, Ronneburg was reabsorbed into Birstein.
Wolfgang 12 June 1533
Ronneburg
Third son of Anton I and Elisabeth of Wied
25 October 1560 – 20 December 1597 Isenburg-Ronneburg
(from 1566 in Kelsterbach)
Johanna of Hanau-Lichtenberg
26 October 1563
(annulled 1573)
one child

Ursula of Solms-Braunfels
16 December 1577
no children

Ursula of Gleichen-Remda
(d. September 1625)
19 September 1585
no children
20 December 1597
Kelsterbach
aged 64
Henry 13 September 1537
Ronneburg
Fifth son of Anton I and Elisabeth of Wied
25 October 1560 – 31 May 1601 Isenburg-Ronneburg
(1566-1597 in Ronneburg; in the entire county from 1597)
Maria of Rappoltstein
(5 July 1551 – 15 October 1571)
1569
no children

Elisabeth of Gleichen-Tona
(1554-19 July 1616)
1572
no children
31 May 1601
Ronneburg
aged 63
Ronneburg was annexed to Birstein
Salentin IX   1532
First son of Henry and Margaret of Wertheim
15 November 1565 – 19 March 1610 County of Grenzau Antonia Wilhelmina of Arenberg
(1 March 1557 - 26 February 1626)
10 December 1577
two children
19 March 1610
aged 77–78
Originally Archbishop-Elector of Cologne, he abdicated of his post to inherit his childless brother's county.
Wolfgang Ernest I   29 December 1560
Birstein
Son of Philip II and Irmengard of Solms-Braunfels
5 April 1596 – 21 May 1633 County of Birstein Anna of Gleichen-Remda
26 September 1585
Birstein
eight children

Elisabeth of Nassau-Dillenburg
16 April 1603
Frankfurt am Main
one child

Juliana of Sayn-Wittgenstein
19 April 1616
four children

Sabine von Saalfeld
(d.1635)
c.1630
(morganatic)
no children
21 May 1633
Birstein
aged 72
Salentin X c.1580
First son of Salentin IX and Antonia Wilhelmina of Arenberg
19 March 1610 – 5 December 1619 County of Grenzau Unmarried 5 December 1619
aged 38–39
Died childless.
Ernest   1584
Second son of Salentin IX and Antonia Wilhelmina of Arenberg
5 December 1619 – 30 May 1664 County of Grenzau Caroline Ernestine of Arenberg
(6 September 1606 – 12 September 1630)
1 September 1625
no children

Maria Anna of Hohenzollern-Hechingen
(1614 – 7 March 1670)
1636
Fürstenberg
one child
30 May 1664
Brussels
aged 79–80
Left no male descendants.
Grenzau divided between the Archbishopric of Trier, Archbishopric of Cologne and Abbots of Fulda
Wolfgang Henry 21 October 1588
Offenbach
First son of Wolfgang Ernest I and Anna of Gleichen-Remda
21 May 1633 – 27 February 1638 County of Offenbach Maria Magdalene of Nassau-Wiesbaden-Idstein
12 September 1609
Büdingen
thirteen children
27 February 1638
Frankfurt am Main
aged 49
Sons of Wolfgang Ernest I, divided their inheritance. William Otto didn't have descendants and his feud was briefly annexed to Offenbach, before it generates a new branch in 1685.
William Otto 6 November 1597
Birstein
Fourth son of Wolfgang Ernest I and Anna of Gleichen-Remda
21 May 1633 – 17 July 1667 County of Birstein Catharina Elisabeth of Hanau-Munzenberg
(1 September 1607 – 24 September 1647)
7 November 1628
no children

Anna Amalia of Nassau-Dillenburg
24 October 1648
Birstein
no children
17 July 1667
Birstein
aged 69
Council of Regency, in Büdingen only (1633-1643)
John Ernest I   21 June 1625
Birstein
Son of Wolfgang Ernest I and Juliana of Sayn-Wittgenstein
21 May 1633 – 8 October 1673 County of Büdingen Maria Charlotte of Erbach-Erbach
15 June 1650
Wächtersbach
twelve children
8 October 1673
Büdingen
aged 48
Isenburg-Birstein annexed to Isenburg-Offenbach
Regency of Maria Magdalene of Nassau-Wiesbaden-Idstein (1638-1640)
John Louis 14 February 1622
Birstein
Son of Wolfgang Henry and Maria Magdalene of Nassau-Wiesbaden-Idstein
27 February 1638 – 23 February 1685 County of Offenbach Maria Juliana of Hanau-Munzenberg
(15 January 1617 – 28 October 1643)
7 October 1643
Hanau
no children

Louise of Nassau-Dillenburg
10 February 1646
Dillenburg
eleven children

Maria Juliana Blingen
(d.1677)
27 January 1666
Hanau
(morganatic)
six children
23 February 1685
Offenbach am Main
aged 63
Regency of Maria Charlotte of Erbach-Erbach (1673-1691) Sons of John Ernest I, ruled under their mother during their minority, and then divided the land once more.
John Casimir   10 July 1660
Wächtersbach
Sixth son of John Ernest I and Maria Charlotte of Erbach-Erbach
8 October 1673 – 23 September 1693 County of Büdingen Sophie Elisabeth of Isenburg-Offenbach
12 April c.1680
Offenbach am Main
eight children
23 September 1693
Culemborg
aged 33
Ferdinand Maximilian I 3 January 1662
Büdingen
Seventh son of John Ernest I and Maria Charlotte of Erbach-Erbach
8 October 1673 – 14 March 1703 County of Wächtersbach Albertine Maria of Sayn-Wittgenstein-Berleburg
(29 January 1663 – 29 November 1711)
1 July 1685
Berleburg
fourteen children
14 March 1703
Wächtersbach
aged 41
George Albert   1 May 1664
Meerholz
Eighth son of John Ernest I and Maria Charlotte of Erbach-Erbach
8 October 1673 – 11 February 1724 County of Meerholz Amalia Henriette of Sayn-Wittgenstein-Berleburg
11 July 1691
Meerholz
six children
11 February 1724
Meerholz
aged 59
Charles Augustus 27 January 1667
Büdingen
Eighth son of John Ernest I and Maria Charlotte of Erbach-Erbach
8 October 1673 – 16 March 1725 County of Marienborn Anna Belgica Florentina of Solms-Laubach
(9 September 1663 – 21 April 1707)
5 May 1690
Laubach
four children
16 March 1725
Marienborn
aged 59
Marienborn was annexed to Wächtersbach
John Philip   3 December 1655
Offenbach am Main
Third son of John Louis and Louise of Nassau-Dillenburg
23 February 1685 – 21 September 1718 County of Offenbach Charlotte Amalia of Palatinate-Zweibrücken-Landsberg
(24 May 1653 – 9 August 1707)19 July 1678
no children

Frederica Wilhelmina Charlotte of Sayn-Wittgenstein-Berleburg
22 July 1708
one child
21 September 1718
Dreieich
aged 63
Sons of John Louis, redivided their inheritance.
William Maurice I 3 August 1657
Offenbach am Main
Fourth son of John Louis and Louise of Nassau-Dillenburg
23 February 1685 – 8 March 1711 County of Birstein Anna Amalia of Isenburg-Büdingen
3 November 1679
Birstein
sixteen children

Anna Ernestina Sofia von Kvernheim
(1660-30 September 1708)
1700
no children

Wilhelmina Elizabeth of Leiningen-Dagsburg-Falkenburg
(13 April 1659 – 15 September 1733)
1709
Niederweisel
no children
8 March 1711
Birstein
aged 54
Council of Regency (1693-1701) Died childless. He was succeeded by his brother.
John Ernest II 3 April 1683
Büdingen
Second son of John Casimir and Sophie Elisabeth of Isenburg-Offenbach
23 September 1693 – 31 May 1708 County of Büdingen Unmarried 31 May 1708
Büdingen
aged 25
Regency of Albertine Maria of Sayn-Wittgenstein-Berleburg (1703-1710)
Ferdinand Maximilian II 12 January 1692
Wächtersbach
Son of Ferdinand Maximilian I and Albertine Maria of Sayn-Wittgenstein-Berleburg
14 March 1703 – 22 April 1755 County of Wächtersbach Albertine Ernestine of Isenburg-Büdingen
(25 August 1692 – 11 June 1724)
28 May 1713
Büdingen
nine children

Ernestine Wilhelmine of Stolberg-Gedern
7 December 1725
Wächtersbach
eight children
22 April 1755
Wächtersbach
aged 63
Ernest Casimir I   12 May 1687
Büdingen
Fourth son of John Casimir and Sophie Elisabeth of Isenburg-Offenbach
31 May 1708 – 15 October 1749 County of Büdingen Christine Eleonore of Stolberg-Gedern
8 August 1708
Gedern
eight children
15 October 1749
Büdingen
aged 62
Brother of John Ernest II.
Wolfgang Ernest I   5 April 1666
Birstein
Third son of William Maurice I and Anna Amalia of Isenburg-Büdingen
8 March 1711 – 15 April 1754 County of Birstein Friederike Elisabeth of Leiningen-Dagsburg-Hartenburg
(16 January 1681 – 11 January 1717)
27 November 1707
Weilburg
seven children

Elisabeth Charlotte of Isenburg-Marienborn
(7 November 1695 – 23 September 1723)
27 January 1719
Marienborn
two children

Charlotte Amalia of Isenburg-Meerholz
22 May 1725
six children
15 April 1754
Birstein
aged 88
Sons of William Maurice I, divided the land between them.
William Maurice II 23 July 1688
Birstein
Fourth son of William Maurice I and Anna Amalia of Isenburg-Büdingen
8 March 1711 – 7 March 1772 County of Philippseich Amalia Louisa von Donna-Lauk-Reichertswalde
(27 February 1763 – 20 April 1800)
3 January 1712
Birstein
three children

Philippine Louise of Stolberg-Gedern
2 April 1725
Gedern
twelve children
7 March 1772
Dreieich
aged 84
Charles 27 November 1700
Son of George Albert and Amalia Henriette of Sayn-Wittgenstein-Berleburg
11 February 1724 – 14 March 1774 County of Meerholz Elisabeth Friederike Juliana of Solms-Rodelheim-Assenheim
(23 September 1703 – 1 June 1762)
11 July 1691
Meerholz
twelve children
14 March 1774
aged 73
Louis Casimir   25 August 1710
Büdingen
Son of Ernest Casimir I and Christine Eleonore of Stolberg-Gedern
15 October 1749 – 15 December 1775 County of Büdingen Auguste Friederike of Stolberg-Wernigerode
(4 September 1743 – 9 January 1783)
24 September 1768
Christinenhof
eight children
15 December 1775
Büdingen
aged 65
Left no surviving heirs. He was succeeded by his nephew.
Wolfgang Ernest II   17 November 1735
Birstein
Son of William Emich Christoph of Isenburg-Birstein and Amalia Belgica of Isenburg-Marienborn
15 April 1754 – 3 February 1803 County of Birstein Sophie Charlotte Ernestina of Anhalt-Bernburg-Schaumburg-Hoym
20 September 1760
Schaumburg Castle
seven children

Ernestine Esperance Victoria of Reuss-Greiz
(20 January 1756 – 2 December 1819)
20 August 1783
no children
3 February 1803
Offenbach am Main
aged 68
Grandson of Wolfgang Ernest I.
Ferdinand Casimir I 19 January 1716
Wächtersbach
First son of Ferdinand Maximilian II and Albertine Ernestine of Isenburg-Büdingen
22 April 1755 – 16 September 1778 County of Wächtersbach Augusta Caroline of Isenburg-Büdingen
(15 July 1722 – 30 November 1758)
7 July 1750
Büdingen
two children
16 September 1778
Assenheim
aged 62
Christian Charles 28 June 1732
Dreieich
Son of William Maurice II and Philippine Louise of Stolberg-Gedern
7 March 1772 – 26 March 1779 County of Philippseich Constance Sophie of Sayn-Wittgenstein-Berleburg
13 June 1762
Dreieich
seven children
26 March 1779
Dreieich
aged 46
John Frederick William 2 May 1729
Meerholz
Son of Charles and Elisabeth Friederike Juliana of Solms-Rodelheim-Assenheim
14 March 1774 – 4 May 1802 County of Meerholz Caroline of Salm
(20 April 1734 – 11 May 1791)
11 June 1762
Grumbach
eight children
4 May 1802
Meerholz
aged 73
Ernest Casimir II 25 February 1757
Büdingen
Son of Ernest Dietrich of Isenburg-Büdingen and Dorothea Wilhelmina of Isenburg-Birstein
15 December 1775 – 25 February 1801 County of Büdingen Eleonore of Bentheim-Steinfurt
(26 April 1754 – 18 February 1827)
25 July 1779
Burgsteinfurt
eight children
25 February 1801
Büdingen
aged 44
Nephew of Louis Casimir.
Ferdinand Casimir II 17 October 1752
Wächtersbach
Son of Ferdinand Casimir I and Augusta Caroline of Isenburg-Büdingen
16 September 1778 – 1 December 1780 County of Wächtersbach Auguste Louise Clementine Hedwig of Bentheim-Steinfurt
(23 September 1755 – 15 November 1798)
29 April 1755
Siegen
no children
1 December 1780
Wächtersbach
aged 28
Left no heirs. The county passed to his uncle.
Council of Regency (1779-1781) Left no heirs.
Charles William Ernest 20 October 1767
Dreieich
Second son of Christian Charles and Constance Sophie of Sayn-Wittgenstein-Berleburg
26 March 1779 – 30 January 1781 County of Philippseich Unmarried 30 January 1781
Dreieich
aged 14
Albert Augustus   14 April 1717
Wächtersbach
Second son of Ferdinand Maximilian II and Albertine Ernestine of Isenburg-Büdingen
1 December 1780 – 25 November 1782 County of Wächtersbach Sophia Dorothea Wilhelmina van Rehren
(15 June 1706 – 23 October 1758)
22 April 1756
Almelo
no children

Charlotte of Hesse-Philippsthal-Barchfeld
9 June 1765
Meiningen
no children
25 November 1782
Wächtersbach
aged 65
Didn't have children. He was succeeded by his brother.
Council of Regency (1781-1788) Brother of Charles William Ernest. In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Henry Ferdinand   15 October 1770
Dreieich
Third son of Christian Charles and Constance Sophie of Sayn-Wittgenstein-Berleburg
30 January 1781 – 12 July 1806 County of Philippseich Amalia Isabella Sidonia of Bentheim-Tecklenburg
13 July 1789
Lemgo
nine children
27 December 1838
Wächtersbach
aged 68
Isenburg-Philippseich absorbed into Isenburg-Birstein
William Reinhard 5 May 1719
Wächtersbach
Third son of Ferdinand Maximilian II and Albertine Ernestine of Isenburg-Büdingen
25 November 1782 – 5 August 1785 County of Wächtersbach Auguste Louise Clementine Hedwig of Bentheim-Steinfurt
(23 September 1755 – 15 November 1798)
20 February 1784
Wächtersbach
no children
5 August 1785
Wächtersbach
aged 66
Brother of Ferdinand Casimir I and Albert Augustus. Married his sister-in-law, but didn't have heirs.
Adolph I 20 August 1722
Wächtersbach
Fourth son of Ferdinand Maximilian II and Albertine Ernestine of Isenburg-Büdingen
5 August 1785 – 19 April 1798 County of Wächtersbach Unmarried 19 April 1798
Wächtersbach
aged 75
Brother of Ferdinand Casimir, Albert Augustus and William Reinhard. He also didn't have heirs.
Louis Maximilian I 28 August 1741
Wächtersbach
Son of Ferdinand Maximilian II and Ernestine Wilhelmine of Stolberg-Gedern
19 April 1798 – 23 June 1805 County of Wächtersbach Auguste of Sayn-Wittgenstein-Hohenstein
(27 February 1763 – 20 April 1800)
26 April 1789
Wittgenstein
four children
23 June 1805
Wächtersbach
aged 64
Last son of Ferdinand Maximilian II.
Ernest Casimir III   20 January 1781
Büdingen
Son of Ernest Casimir II and Eleonore of Bentheim-Steinfurt
25 February 1801 – 12 July 1806 County of Büdingen Ferdinande of Erbach-Schönberg
(23 July 1784 – 24 September 1848)
10 May 1804
Zwingenberg
eight children
1 December 1852
Büdingen
aged 71
In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Isenburg-Büdingen absorbed into Isenburg-Birstein
Charles William Louis 7 May 1763
Meerholz
Son of John Frederick William and Caroline of Salm
4 May 1802 – 12 July 1806 County of Meerholz Caroline of Sayn-Wittgenstein-Hohenstein
(13 September 1764 – 28 April 1833)
29 March 1785
Wittgenstein
six children
17 April 1832
Meerholz
aged 68
In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Meerholz absorbed into Birstein
Regency of Charles, Count of Isenburg-Birstein (1805-1806) In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Louis Maximilian II 21 May 1791
Wächtersbach
Son of Louis Maximilian I and Auguste of Sayn-Wittgenstein-Hohenstein
23 June 1805 – 12 July 1806 County of Wächtersbach Unmarried 25 February 1821
Wächtersbach
aged 29
Wachtersbach absorbed into Birstein
Charles   29 June 1766
Birstein
Son of Wolfgang Ernest II and Sophie Charlotte Ernestina of Anhalt-Bernburg-Schaumburg-Hoym
3 February 1803 – 12 July 1806 Principality of Birstein Charlotte Auguste of Erbach-Erbach
16 September 1795
Erbach
six children
21 March 1820
Birstein
aged 53
In 1806, in the advent of the German mediatization, his county was chosen as the one to which all the others were absorbed to. He was then raised as Prince of Isenburg. However, in 1815, his own Principality was also absorbed, firstly to Austria, and then to the Electorate of Hesse.
12 July 1806 – 8 June 1815 Principality of Isenburg
Isenburg was annexed to Austria (1815-16) and to the Electorate of Hesse (from 1816)

Post-1815 lines of succession

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Mediatized line of Birstein (1815)

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[citation needed]
  • Charles, 1st Prince 1803-1820 (1766-1820)
    • Wolfgang Ernst, 2nd Prince 1820-1866 (1798-1866)
    • Prince Victor (1802-1843)
      • Karl, 3rd Prince 1866-1899 (1838-1899)
        • Prince Leopold (1866-1933) -renounced his rights in 1898
        • Franz Joseph, 4th Prince 1899-1939 (1869-1939)
          • Franz Ferdinand, 5th Prince 1939-1956 (1901-1956)
            • Franz Alexander, 6th Prince 1956–2018 (1943-2018)
              • Alexander, 7th Prince 2018–present (1969) ∞ Sarah Lorenz
                • Princess Alix (2015)
                • Princess Zita (2017)
                • Franz Salvator, Hereditary Prince (2019)
              • Princess Katharina (1971) ∞ Archduke Martin of Austria
              • Princess Isabelle (1973) ∞ Carl, Prince of Wied
              • Frederick, Feudal Prince 2018–present (1974)
              • Princess Sophie (1978) ∞ Georg Friedrich, Prince of Prussia
              • Prince Viktor (1979) ∞ Jungeun Anes Lee
                • Princess Amalia (2016)
                • Princess Victoria (2018)

Mediatized line of Büdingen (1806)

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  • Ernest Casimir III (1806-1848), in 1840 he was raised to Prince.
  • Ernest Casimir IV (1848-1861)
  • Bruno (1861-1906)
  • Wolfgang (1906-1920)
  • Alfred (1920-1922)
  • Karl (1922-1941)
  • Otto Friedrich (1904-1990), from the Ysenburg-Büdingen-Wächtersbach branch, adopted by Karl in 1936
  • Wolfgang-Ernst, 8th Prince 1990- (b.1936) ∞ Leonille Princess of Sayn-Wittgenstein-Berleburg
    • Hereditary Prince Casimir-Alexander (b.1967)
      • Prince Tristan Alexander (b.2014)
    • Prince Maximilian (b.1969)
      • Prince Tassilo-Alexander (b.2006)

Notable members of the family

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References

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  1. ^ Treitschke, Heinrich. History of Germany in the Nineteenth Century, Vol. I, page 609.
  2. ^ a b c d Given the uncertainty of previous counts pre-1090, the numbering of rulers in this table will start only after 1090
  3. ^ a b Hess, J. (ed.) (1901), Die Urkunde des Pfarrarchivs von St Severin in Köln, Köln, "Köln St Severin", 5, p. 8.
  4. ^ See Niederrheins Urkundenbuch, Band I, 253, p. 163, and Hess, J. (ed.) (1901) Die Urkunde des Pfarrarchivs von St Severin in Köln (Köln) ("Köln St Severin"), 5, p. 8.
  5. ^ a b c Niederrheins Urkundenbuch, Band I, 286, p. 187.
  6. ^ a b Some sources (as the English wiki article itself), conflate Gerlach IV (d.1167, documented in 1158) and Gerlach V (d.1217, documented in 1179) in one person; however, this also conflates Henry I of Cleeberg (d.1220) and Rembold IV (d.1175) in the same generation as brothers. This, given Rembold and Henry's different life-spans, is fairly unlikely. For the 1158 document, see Trier Diplomatica (Hontheim), I, CCCCI, p. 586. For the 1179 one, see Codex diplomaticus Rheno-Mosellanus, Theil I, 201, p. 431.
  7. ^ Last documented in 1210. See Mittelrheinisches Urkundenbuch II, 261, p. 302.
  8. ^ Codex diplomaticus Rheno-Mosellanus, Theil I, 247, p. 500.
  9. ^ Isenburg-Wied-Runkel (1775), Urkunden, LXXIII, p. 88
  10. ^ Sometimes counted as Gerlach IV after Gerlach III of Kobern.
  11. ^ Codex diplomaticus Rheno-Mosellanus, Theil II, 247, p. 376
  12. ^ Isenburg-Wied-Runkel (1775), Urkunden, LVI, 73.
  13. ^ Milmeister (2003), p. 60.
  14. ^ Counted as II given his father his numbered I as co-ruler of Cecilia.
  15. ^ Sometimes counted as Gerlach V.
  16. ^ Clervaux (1883), 501, p.100.
  17. ^ Sometimes numbered II in reference to his uncle, Henry, who died in 1298, even before his father's ascension.
  18. ^ Sometimes counted as Gerlach VI.
  19. ^ a b Isenburg-Wied-Runkel (1775), Urkunden, CIII, 120.
  20. ^ Sometimes numbered John V.
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  • Official Website – Fürstenhaus Isenburg (Princely House of Isenburg) (in German)