William, Duke of Nassau
Wilhelm (Given names: "
Georg Wilhelm August Heinrich Belgicus"; 14 June 1792, Kirchheimbolanden – 20/30 August 1839, Bad Kissingen) was joint sovereign Duke of Nassau, along with his cousin Frederick Augustus, reigning from 1816 until 1839.
He was also sovereign Prince of Nassau-Weilburg from 1816 until its incorporation into the duchy of Nassau.
Frederick Augustus died on 24 March 1816 and Wilhelm inherited the Usingen territories and became sole sovereign of the Duchy of Nassau.
He is the father of Adolphe, Grand Duke of Luxembourg, and Queen Sophia of Sweden and Norway, consort of King Oscar II and also a 17th cousin (and 3rd cousin) of William III of the Netherlands, who left a surviving daughter to rule his main realm, but the crown of Luxembourg went through the male line, looking to 17 generations back, to pass to the Duke of Nassau and then his descendants.
Ernest Frederick III, Duke of Saxe-Hildburghausen
Ernst Frederick III Karl, Duke of Saxe-Hildburghausen (10 June 1727 in Königsberg in Bayern – 23 September 1780 in Seidingstadt), was a duke of Saxe-Hildburghausen.
Frederick, Duke of Saxe-Altenburg
Frederick, Duke of Saxe- Hildburghausen( 29 April 1763 in Hildburghausen – 29 September 1834 in Jagdhaus Hummelshain, Altenburg), was duke of Saxe- Hildburghausen( 1780 – 1826) and duke of Saxe- Altenburg( 1826–1834).
Amalie of Saxe-Hildburghausen
Sophie Amalie Caroline of Saxe- Hildburghausen( born: 21 July 1732 in Hildburghausen; died: 19 June 1799 in Öhringen), was a princess of Saxe- Hildburghausen and by marriage Princess of Hohenlohe- Neuenstein- Oehringen.
Princess Louise of Saxe-Hildburghausen
Princess Charlotte "Luise" Friederike Amalie Alexandrine of Saxe-Hildburghausen, full German name: "Charlotte Luise Friederike Amalie Alexandrine, Prinzessin von Sachsen-Hildburghausen" (28 January 1794, Hildburghausen, Saxe-Hildburghausen – 6 April 1825, Biebrich, Duchy of Nassau) was a member of the House of Saxe-Hildburghausen and a Princess of Saxe-Hildburghausen (and later of Saxe-Altenburg) by birth.
Through her marriage to William, Duke of Nassau, Louise was also a member of the House of Nassau-Weilburg and Duchess consort of Nassau.
Louise was briefly Princess consort of Nassau-Weilburg in 1816.
Louis Frederick of Saxe-Hildburghausen
Louis Frederick of Saxe- Hildburghausen( 11 September 1710, Hildburghausen – 10 June 1759, Nijmegen), was a Prince of Saxe- Hildburghausen and General Field Marshal in the Bavarian army.
Princess Louise of Denmark (1726–1756)
Louise of Denmark and Norway( 19 October 1726 – 8 August 1756) was a Danish and Norwegian princess, the daughter of King Christian VI of Denmark and his wife Sophie Magdalene of Brandenburg- Kulmbach.
Following her marriage to Ernest Frederick III, Duke of Saxe- Hildburghausen, she became Duchess of Saxe- Hildburghausen.
Ernest Frederick II, Duke of Saxe-Hildburghausen
Ernst Frederick II, Duke of Saxe- Hildburghausen( 17 December 1707 in Hildburghausen – 13 August 1745 in Hildburghausen), was a duke of Saxe- Hildburghausen.
Prince Eugene of Saxe-Hildburghausen
Frederick William Eugene of Saxe- Hildburghausen( born: 8 October 1730 in Hildburghausen; died: 4 December 1795 in Öhringen) was a Prince of Saxe- Hildburghausen.
Princess Sophie of Saxe-Hildburghausen
Princess Sophie of Saxe- Hildburghausen( Ernestine Friederike Sophie; 22 February 1760, Hildburghausen – 28 October 1776, Coburg), was a Princess of Saxe- Hildburghausen by birth, and by marriage she became the Hereditary Princess of Saxe- Coburg- Saalfeld.

Question: Where did Princess Louise Of Saxe-Hildburghausen's husband die?
Answer: Bad Kissingen