House of Nassau-Weilburg

House of Nassau-Weilburg
Country Germany, Luxembourg
Estates Grand Ducal Palace, Luxembourg City
Berg Castle, Colmar-Berg
Fischbach Castle, Fischbach
Parent house House of Nassau, House of Bourbon-Parma
Style(s) His/Her Royal Highness
Founded 1344 (1344)
Founder John I of Nassau-Weilburg
Current head Henri of Luxembourg

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.

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 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 sole ruler after his death. However Frederick William died from a fall on the stairs at Weilburg Castle 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, and since 1890 they have governed the nation of Luxembourg. The House of Nassau-Weilburg became extinct in the male line with the death of Grand Duchess Charlotte of Luxembourg in 1985.

The reigning house of Luxembourg retained Nassau-Weilburg as its official name. Since the death of the Grand Duchess, the House of Nassau-Weilburg is a cadet branch (male-line descendants) of the House of Bourbon-Parma.[1]


Grand Dukes of Luxembourg, Guillaume IV and Adolphe, were Protestants; the religion of the House of Nassau, changed after Guillaume's marriage to Marie Anne of Portugal, who was Roman Catholic.

Sovereigns from the House of Nassau-Weilburg

(Princely) County of Nassau-Weilburg
(Gefürstete) Grafschaft Nassau-Weilburg
State of the Holy Roman Empire
Flag Coat of arms
Nassau-Weilburg as in 1789
Capital Not specified
Government Principality
Historical era Middle Ages
   Established 1344
  Raised to princely county 1366
  Seized Electoral Trier
    (east of Rhine)
   Merged w. N.-Usingen
    into Nassau Duchy
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:[2][3]

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


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

Cadet branch of
House of Bourbon-Parma
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