Princess Catherine of Württemberg
Princess Catherine Frederica Charlotte of Württemberg (Stuttgart, 24 August 1821 – Stuttgart, 6 December 1898) was a daughter of William I of Württemberg and Pauline Therese of Württemberg.
She was the mother of William II of Württemberg.
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.
Princess Pauline of Württemberg (1810–1856)
Princess "Pauline" Friederike Marie of Württemberg, full German name: "Pauline Friederike Marie, Prinzessin von Württemberg" (25 February 1810, Stuttgart, Kingdom of Württemberg – 7 July 1856, Wiesbaden, Duchy of Nassau) was a member of the House of Württemberg and a Princess of Württemberg by birth.
Through her marriage to William, Duke of Nassau, Louise was also a Duchess consort of Nassau.
Pauline is an ancestress of the present Belgian, Danish, Dutch, Luxembourg, Norwegian, and Swedish Royal families.
Princess Pauline of Orange-Nassau
Princess Pauline of Orange-Nassau ("Wilhelmina Frederika Louise Pauline Charlotte"; 1 March 1800 – 22 December 1806) was a Princess of the House of Orange-Nassau.
Princess Augusta of Württemberg
Princess Augusta of Württemberg( 4 October 1826 in Stuttgart – 3 December 1898, ibid.) was a daughter of King William I of Württemberg and his wife, Pauline of Württemberg.
Prince Frederick of Württemberg
Prince" Frederick" Charles Augustus of Württemberg( 21 February 1808 – 9 May 1870) was a General in the Army of Württemberg and the father of William II of Württemberg.
Frederick was a member of the Royal Family of Württemberg and a Prince of Württemberg.
Louis Frederick, Duke of Württemberg-Montbéliard
Louis Frederick of Württemberg- Montbéliard( 29 January 1586 in Montbéliard – 26 January 1631 in Montbéliard) was the founder of a cadet line of the House of Württemberg known as the Dukes of Württemberg- Montbéliard.
Louis Frederick of Württemberg was born at Montbéliard Castle as the fifth child and second son of Duke Frederick I of Württemberg, and princess Sibylla of Anhalt.
Prince Nikolaus Wilhelm of Nassau
Prince Nikolaus Wilhelm of Nassau( 20 September 1832 – 17 September 1905), was the only son of William, Duke of Nassau by his second wife Princess Pauline of Württemberg.
Pauline Therese of Württemberg
Pauline of Württemberg (4 September 1800 – 10 March 1873) was a daughter of Duke Louis of Württemberg and Princess Henriette of Nassau-Weilburg.
She married her first cousin King William I of Württemberg and was his consort.
Princess Pauline of Württemberg (1877–1965)
Princess Pauline of Württemberg( 19 December 18777 May 1965) was the elder daughter of William II of Württemberg and wife of William Frederick, Prince of Wied.
She was for many years the regional director of the German Red Cross, in western Germany.

Question: Where did Princess Pauline Of Württemberg (1810–1856)'s husband die?
Answer: Bad Kissingen