Ernest Casimir, Count of Nassau-Weilburg

Ernest Casimir of Nassau-Weilburg
Spouse(s) Anna Maria of Sayn-Wittgenstein-Hachenburg
Noble family House of Nassau
Father Louis II, Count of Nassau-Weilburg
Mother Anna Maria of Hesse-Kassel
Born (1607-11-15)15 November 1607
Died April 1655

Ernest Casimir of Nassau-Weilburg (15 November 1607 – April 1655) was the founder of the younger line of Nassau-Weilburg.

He was a son of Louis II, Count of Nassau-Weilburg and his wife Anna Maria of Hesse-Kassel (1567–1626).


He was born in Saarbrücken.

His father, Louis II, had been able to unite all the territories of Walram branch of Nassau. After his death in 1621, the territories were divided among four brothers, with William Louis, the oldest, acting as regent for the youngest two. When Otto, the youngest died in 1632, and Ernest Casimir came of age, the three surviving brothers divided the territory anew. The oldest, William Louis, received Nassau-Saarbrücken, John received Idstein and Ernest Casimir received Weilburg, Merenberg, Gleiberg, Hüttenberg, Reichelsheim, Kirchheim, Stauf, Bolanden and parts of Homburg[1]

Ernest Casimir did not spend much time in his own territory. In 1634, he had to flee from the Thirty Years' War. He fled to Metz and returned after the 1648 Peace of Westphalia. Even after the peace had been signed, it took a while before all rightful rulers had been restored to power.[2]

During this period, the brothers concluded the Treaty of Gotha of 16 July 1651, in which division of 1632 was confirmed and again adjusted.

He died in Weilburg.

Marriage and issue

In 1634 Ernest Casimir married Anna Maria of Sayn-Wittgenstein-Hachenburg (1610–1656). She was the daughter of Count William II of Sayn-Wittgenstein-Hachenburg (1569–1623). The couple had the following children:



  1. Verein für Nassauische Altertumskunde und Geschichtsforschung: Annalen des Vereins für Nassauische Alterthumskunde, vol. 9-10, p.255, Digitized
  2. Ernst Friedrich Keller: Drangsale des Nassauischen Volkes in den Zeiten des 30 jährigen Krieges, p.465, Digitized.
Ernest Casimir, Count of Nassau-Weilburg
Born: 15 November 1607 Died: April 1655
Preceded by
Louis II
Count of Nassau-Weilburg Succeeded by
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