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.
Frederick Augustus, Duke of Württemberg-Neuenstadt
Frederick Augustus of Württemberg-Neuenstadt (Neuenstadt am Kocher, 12 March 1654 – 6 August 1716 in Gochsheim) was Duke of Württemberg and second Duke of Württemberg-Neuenstadt.
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.
Wilhelm, Duke of Urach
Count Friedrich Wilhelm Alexander Ferdinand of Württemberg, 1st Duke of Urach( 6 July 1810, in Stuttgart – 17 July 1869, in Schloss Lichtenstein), was the son of Duke Wilhelm of Württemberg( 1761 – 1830), younger brother of King Frederick I of Württemberg, by his morganatic wife, Baroness Wilhelmine von Tunderfeldt- Rhodis( 1777 – 1822), who had married in 1800.
He was the first Head of the House of Urach.
Wilhelm served as a cavalry officer in the army of the then- independent Kingdom of Württemberg.
He also tested cannon for the Army of Württemberg, some of which can still be seen at Lichtenstein Castle, which he substantially rebuilt in the 1840s.
He was inspired by the romantic historical novel" Lichtenstein" by Wilhelm Hauff( 1826).
Hauff was in turn inspired by the works of Walter Scott.
He was created Duke of Urach on 28 March 1867, with the style of Serene Highness.
Wilhelm was a junior member of the royal family of Württemberg.
He was a nephew of King Frederick( d. 1816), and was a first cousin of King William I of Württemberg( ruled 1816 – 1864).
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.
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.
Christoph, Duke of Württemberg
Christoph of Württemberg, Duke of Württemberg (12 May 1515 – 28 December 1568) ruled as Duke of Württemberg from 1550 until his death in 1568.
Duke Eugen of Württemberg (1846–1877)
Duke Eugen of Württemberg( 20 August 1846 – 27 January 1877) was a German prince and a staff officer of Württemberg.
Princess Henriette of Nassau-Weilburg
Princess Henriëtte of Nassau-Weilburg, then of Nassau (22 April 1780, in Kirchheimbolanden – 2 January 1857, in Kirchheim unter Teck) was a daughter of Prince Charles Christian and Carolina of Orange-Nassau, daughter of William IV, Prince of Orange.
She is an ancestor of branches of the Austrian Imperial and Royal Family and Russian Imperial Family and Dutch Royal Family; the German Royal, Grand Ducal, Ducal, Princely and Princely noble families of: Baden, Bavaria, Hanover, Hohenlohe-Langenburg, Oldenburg, Salm-Salm, Saxe-Weimar-Eisenach, Waldeck and Pyrmont and Wied; in addition to the British, Greek, Romanian, Spanish and Yugoslavian Royal Families.
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.

Question: What is the date of death of Pauline Therese Of Württemberg's mother?
Answer: 2 January 1857