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
Parent houseHouse of Nassau[1][2]
Founded1344 (1344)
FounderJohn I of Nassau-Weilburg
Current headGrand Duke Henri
Style(s)His/Her Royal Highness
Estate(s)of Nassau and Luxembourg

On July 17, 1806, on the dissolution of the Holy Roman Empire, the counties of Nassau-Usingen and Nassau-Weilburg both joined the Confederation of the Rhine. Under pressure from Napoleon, both counties merged to become the Duchy of Nassau on August 30, 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 January 9, 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 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-Weilburg

(Princely) County of Nassau-Weilburg

(Gefürstete) Grafschaft Nassau-Weilburg
Coat of arms
Nassau-Weilburg as in 1789
Historical eraMiddle Ages
Early modern
 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-Weilburg

Princely counts of Nassau-Weilburg

Dukes of Nassau

Grand Dukes of Luxembourg

Family Tree

Compiled from Wikipedia and:[3][4]

For ancestors of the
House of Nassau-Weilburg
(House of Nassau family tree)
John III
(1441 +1480)
Count of Nassau-Weilburg

Louis I
(1473 +1523)
Count of Nassau-Weilburg
Philip III
(1504 +1559)
Count of Nassau-Weilburg
(1537 +1593)
Count of Nassau-Weilburg
Philip IV
(1542 +1602)
Count of Nassau-Weilburg
in Saarbrucken

Louis II
(1565 +1627)
Count of Nassau-Weilburg
in Ottweiler
Count of Nassau-Weilburg
in Weilburg
John Casimir
(1577 +1602)
Count of Nassau-Weilburg
in Gleiberg
William Louis
(1590 +1640)
Count of Nassau-Saarbrücken

(1603 +1677)
Count of Nassau-Idstein

Counts of Nassau-Idstein
Ernest Casimir
(1607 +1655)
Count of Nassau-Weilburg
John Louis
(1625 +1690)
Count of Nassau-Ottweiler

ext. 1728
Gustav Adolph
(1632 +1677)
Count of Nassau-Saarbrücken

ext. 1723
(1635 +1702)
Count & Prince of Nassau-Usingen

ext. 1816
(1640 +1675)
Count of Nassau-Weilburg
John Ernst
(1664 +1719)
Count & Prince of Nassau-Weilburg
Charles August
(1685 +1753)
Prince of Nassau-Weilburg
Charles Ernst
Prince of Nassau-Weilburg
Charles Christian
(1735 +1788)
Prince of Nassau-Weilburg
Princess Carolina of Orange-Nassau
(1743 +1787)
Frederick William
(1768 +1816)
Prince of Nassau-Weilburg
(1792 +1839)
Duke of Nassau

(1817 +1905)
Duke of Nassau 1839-1866
Grand Duke of Luxembourg

Grand Ducal Family of Luxembourg


  1. "Inoformation of the reigning House of Nassau-Weilburg".
  2. "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.;CS1 maint: extra punctuation (link)
  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.
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
House of Orange-Nassau
Ruling house of Luxembourg
Succeeded by
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