House of Nassau-Weilburg

The House of Nassau-Weilburg, a branch of the House of Nassau, ruled a division of the County of Nassau, which was a state in what is now Germany, then part of the Holy Roman Empire, from 1344 to 1806.

House of Nassau-Weilburg
Blason Nassau-Weilbourg.svg
Parent houseHouse of Nassau[1][2]
Founded1344; 679 years ago (1344)
FounderJohn I of Nassau-Weilburg
Current headHenri, Grand Duke of Luxembourg (in cognatic line)
Style(s)His/Her Royal Highness
Dissolution1985 (in agnatic line)

On 17 July 1806, upon the dissolution of the Holy Roman Empire, the principalities of Nassau-Usingen and Nassau-Weilburg both joined the Confederation of the Rhine. Under pressure from Napoleon, both principalities merged to become the Duchy of Nassau on 30 August 1806, under the joint rule of Prince Frederick August of Nassau-Usingen and his younger cousin, Prince Frederick William of Nassau-Weilburg. As Frederick August had no heirs, he agreed that Frederick William should become the sole ruler after his death. However, Frederick William died from a fall on the stairs at Schloss Weilburg on 9 January 1816 and it was his son William who later became duke of a unified Nassau.

The sovereigns of this house afterwards governed the Duchy of Nassau until 1866. Since 1890, they have reigned over the Grand Duchy of Luxembourg.


The first two Grand Dukes of Luxembourg, Adolphe and Guillaume IV, were Protestants, however, the Christian denomination of the house changed after Grand Duke Guillaume IV's marriage to Marie Anne de Braganza, who was Roman Catholic.[2]


Sovereigns from the House of Nassau-WeilburgEdit

(Princely) County of Nassau-Weilburg
(Gefürstete) Grafschaft Nassau-Weilburg
Coat of arms
Nassau-Weilburg as in 1789
Historical eraMiddle Ages
Early modern
• Established
• Raised to princely county
• Seized Electoral Trier
    (east of Rhine)
• Merged w. N.-Usingen
    into Nassau
30 August 1806
Preceded by
Succeeded by
  County of Nassau
  Electorate of Trier
Duchy of Nassau  


Counts of Nassau-WeilburgEdit

Princely counts of Nassau-WeilburgEdit

Dukes of NassauEdit

Grand Dukes of LuxembourgEdit

Henri, Grand Duke of LuxembourgJean, Grand Duke of LuxembourgCharlotte, Grand Duchess of LuxembourgMarie-Adélaïde, Grand Duchess of LuxembourgWilliam IV, Grand Duke of LuxembourgAdolphe, Grand Duke of Luxembourg

Family TreeEdit

Family tree of the House of Nassau-Weilburg

Compiled from Wikipedia and these references.[3][4]

For ancestors of the House of Nassau-Weilburg, see House of Nassau#Family Tree

John III
Count of Nassau-Weilburg
Louis I
Count of Nassau-Weilburg
Philip III
Count of Nassau-Weilburg
Count of Nassau-Weilburg
Philip IV
Count of Nassau-Weilburg
in Saarbrucken
Louis II
Count of Nassau-Weilburg
in Ottweiler
Count of Nassau-Weilburg
in Weilburg
John Casimir
Count of Nassau-Weilburg
in Gleiberg
William Louis
Count of Nassau-Saarbrücken
Count of Nassau-Idstein
Counts of Nassau-Idstein
Ernest Casimir
Count of Nassau-Weilburg
John Louis
Count of Nassau-Ottweiler
ext. 1728
Gustav Adolph
Count of Nassau-Saarbrücken
ext. 1723
Count & Prince of Nassau-Usingen
ext. 1816
Count of Nassau-Weilburg
John Ernst
Count & Prince of Nassau-Weilburg
Charles August
Prince of Nassau-Weilburg
Charles Ernst
Prince of Nassau-Weilburg
Princess Carolina of Orange-Nassau
Charles Christian
Prince of Nassau-Weilburg
Frederick William
Prince of Nassau-Weilburg
Duke of Nassau
Duke of Nassau 1839–1866
Grand Duke of Luxembourg
Grand Ducal Family of Luxembourg


  1. ^ "Inoformation of the reigning House of Nassau-Weilburg".
  2. ^ a b "Inoformation of the reigning House of Nassau-Weilburg which explicitly states the House of Nassau as its parent house" (PDF).
  3. ^ Louda, Jiri; Maclagan, Michael (December 12, 1988), "Netherlands and Luxembourg, Table 33", Heraldry of the Royal Families of Europe (1st (U.S.) ed.), Clarkson N. Potter, Inc.
  4. ^ Hay, Mark Edward (1 June 2016). "The House of Nassau between France and Independence, 1795–1814: Lesser Powers, Strategies of Conflict Resolution, Dynastic Networks". The International History Review. 38 (3): 482–504. doi:10.1080/07075332.2015.1046387. S2CID 155502574.
Royal house
House of Nassau-Weilburg
New dynasty
partitioned from Cty. of Nassau
Ruling house of Nassau-Weilburg
Nassau-Weilburg merged in
Ducal Nassau ruled by the
House of Nassau-Usingen
Preceded by
House of Nassau-Usingen
Ruling house of the Duchy of Nassau
Nassau annexed by Prussia
Preceded by Ruling house of Luxembourg
Succeeded by