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House of Nassau-Weilburg
Country Germany, Luxembourg
Ancestral house House of Nassau, House of Bourbon-Parma
Titles Count of Nassau-Weilburg, Prince of Nassau-Weilburg, Duke of Nassau, Grand Duke of Luxembourg
Founder John I of Nassau-Weilburg
Current head Henri of Luxembourg
Founding 1344

The House of Nassau-Weilburg ruled a division of Nassau, which was a state in current Germany, a state that existed from 1344 to 1806.

On July 17, 1806, the counties of Nassau-Usingen and Nassau-Weilburg 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 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. However, the name has been carried on in the bilineal line, with the official name of the reigning house of Luxembourg remaining Nassau-Weilburg. Since the death of the Grand Duchess, members of the reigning house are cognatically members of the House of Nassau-Weilburg and agnatically members of the House of Bourbon-Parma.


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

Template:Infobox former country/autocat
(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


Counts of Nassau-Weilburg

  • 1344–71: John I
  • 1371–1429: Philip I
  • 1429–42: Philip II and John II
  • 1442–92: Philip II
  • 1492–1523: Louis I
  • 1523–59: Philip III
  • 1559–93: Albrecht
  • 1559–1602: Philip IV
  • 1593–1625: Louis II
  • 1625–29: William Louis, John IV and Ernst Casimir
  • 1629–55: Ernst Casimir
  • 1655–75: Frederick
  • 1675–88: John Ernst

Princely counts of Nassau-Weilburg

Dukes of Nassau

Grand Dukes of Luxembourg

Family Tree

Complied from World Heritage Encyclopedia and:[1]

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
Louis II
(1565 +1627)
Count of Nassau-Weilburg
in Ottweiler
William Louis
(1590 +1640)
Count of Nassau-Saarbrücken
John Louis
(1625 +1690)
Count of Nassau-Ottweiler
Charles August
(1685 +1753)
Prince of Nassau-Weilburg
Princess Carolina of Orange-Nassau
(1743 +1787)
Grand Ducal Family of Luxembourg


Royal house
House of Nassau-Weilburg
Cadet branch of the House of Bourbon-Parma
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
House of Bourbon-Parma
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