Nassau-Usingen

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Flag of Nassau-Usingen.
Arms of Nassau-Usingen.

Nassau-Usingen was a county of the Holy Roman Empire in the Upper Rhenish Circle that became a principality in 1688.

The origin of the county lies in the medieval county of Weilnau that was acquired by the counts of Nassau-Weilburg in 1602. That county was divided in 1629 into the lines of Nassau-Weilburg, Nassau-Idstein and Nassau-Saarbrücken that was divided only 30 years later in 1659.

The emerging counties were Nassau-Saarbrücken, Nassau-Ottweiler and Nassau-Usingen. At the beginning of the 18th century, 3 of the Nassau lines died out and Nassau-Usingen became their successor (1721 Nassau-Idstein, 1723 Nassau-Ottweiler und 1728 Nassau-Saarbrücken). In 1735 Nassau-Usingen was divided again into Nassau-Usingen and Nassau-Saarbrücken. In 1797 Nassau-Usingen inherited Nassau-Saarbrücken.

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 title has been carried in pretense by Prince Frederick August's half-brother Karl Philip's line.

List of rulers[edit]

reign name born died relation to predecessor
1640/59-1702 Walrad 5-3-1635 17-10-1702 son of William Louis of Nassau-Saarbrücken
1702–1718 William Henry 2-5-1684 14-2-1718 son of Walrad
1718–1775 Charles 1-1-1712 21-6-1775 son of William Henry
1775–1803 Charles William 9-11-1735 17-5-1803 son of Charles
1803–1816 Frederick Augustus 23-4-1738 24-3-1816 brother of Charles William
1816-? Karl Philip 25-3-1746 15-8-1789 half brother of Frederick Augustus

See also[edit]

Sources[edit]