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The Latin Emperor was the ruler of the Latin Empire, the historiographical convention for the Crusader realm, established in Constantinople after the Fourth Crusade (1204) and lasting until the city was recovered by the Byzantine Greeks in 1261. Its name derives from its Catholic and Western European ("Latin") nature. The empire, whose official name was Imperium Romaniae (Latin: "Empire of Romania"), claimed the direct heritage of the Eastern Roman Empire, which had most of its lands taken and partitioned by the crusaders. This claim however was disputed by the Byzantine Greek successor states, the Empire of Nicaea, the Empire of Trebizond and the Despotate of Epirus. Out of these three, the Nicaeans succeeded in displacing the Latin emperors in 1261 and restored the Byzantine Empire.
|Emperor of Constantinople|
|First monarch||Baldwin I|
|Last monarch||Baldwin II|
|Formation||16 April 1204|
|Abolition||25 July 1261|
Latin emperors of Constantinople, 1204–1261 edit
|9 May 1204 – 14 April 1205
(11 months and 5 days)
|Son of Baldwin V, Count of Hainaut and Margaret I, Countess of Flanders. Crowned emperor on 16 May 1204 in the Hagia Sophia||July 1172 – 1205/1206|
Married to Marie of Champagne (2 daughters). Captured by the Second Bulgarian Empire in the Battle of Adrianople; died in captivity.
|20 August 1206 – 11 June 1216
(9 years, 9 months and 22 days)
|Brother of Baldwin I; ruled as regent until the news of his brother's death arrived to Constantinople||1178 – 11 June 1216|
Married to Agnes of Montferrat and Maria of Bulgaria. Died of natural causes
|July 1216 – 1217
|Son of Peter of Courtenay, also a cousin of king Philip II of France; crowned emperor in Rome by Pope Honorius III on 9 April 1217||Married Yolanda of Flanders (10 children). Captured by the despot of Epirus, Theodore Komnenos Doukas in 1217; died in captivity some time after.|
|1217 – August 1219
|Daughter of Baldwin V, Count of Hainaut and wife of Emperor Peter||1175 – August 1219|
Made an alliance with Theodore I Lascaris of the Empire of Nicaea. Died of natural causes
|Regency of Conon de Béthune (1219) and Giovanni Colonna (1220–1221)|
|Robert I||25 May 1221 – early 1228
|Son of Emperor Peter and Yolanda, crowned emperor after an interregnum||Married Lady of Neuville. Died of natural causes in the Principality of Achaea while traveling back to Constantinople.|
|9 April 1229 – 23 March 1237
(7 years, 11 months and 14 days)
|Son of Erard II, Count of Brienne, crowned senior co-emperor and regent for Baldwin II||1170 – 23 March 1237|
Married Stephanie of Armenia (1 son) and Berengaria of León (4 children). Only Latin emperor to die in Constantinople.
|23 March 1237 – 25 July 1261
(24 years, 3 months and 28 days)
|Son of Emperor Peter and Yolanda. Still a child in 1221, he ruled under John's regency until 1237||late 1217 – October 1273|
Married Marie of Brienne (1 son). Fled during the Reconquest of Constantinople.
Latin emperors of Constantinople in exile, 1261–1383 edit
- Baldwin II (1261–1273), in exile from Constantinople
- Philip I (1273–1283), his son
- Empress regnant Catherine I (1283–1307), his daughter, with...
- Charles (1301–1307), her husband
- Empress regnant Catherine II (1307–1346), their daughter, with...
- Philip II (1313–1331), her husband
- Robert II (1346–1364), their son
- Philip III (1364–1373), his brother
- James (1373–1383), his nephew