question: Who is Duchess Marie Of Württemberg's paternal grandfather?
context: [["Prince Frederick of W\u00fcrttemberg", ["Prince\" Frederick\" Charles Augustus of W\u00fcrttemberg( 21 February 1808 \u2013 9 May 1870) was a General in the Army of W\u00fcrttemberg and the father of William II of W\u00fcrttemberg.", "Frederick was a member of the Royal Family of W\u00fcrttemberg and a Prince of W\u00fcrttemberg."]], ["Louis Frederick, Duke of W\u00fcrttemberg-Montb\u00e9liard", ["Louis Frederick of W\u00fcrttemberg- Montb\u00e9liard( 29 January 1586 in Montb\u00e9liard \u2013 26 January 1631 in Montb\u00e9liard) was the founder of a cadet line of the House of W\u00fcrttemberg known as the Dukes of W\u00fcrttemberg- Montb\u00e9liard.", "Louis Frederick of W\u00fcrttemberg was born at Montb\u00e9liard Castle as the fifth child and second son of Duke Frederick I of W\u00fcrttemberg, and princess Sibylla of Anhalt."]], ["Duke Alexander of W\u00fcrttemberg (1771\u20131833)", ["Duke Alexander of W\u00fcrttemberg", "(M\u00f6mpelgard/Montb\u00e9liard, then W\u00fcrttemberg (now France), 5 May 1771 \u2013 Gotha, Thuringia, Germany, 4 July 1833) was a Duke of W\u00fcrttemberg.", "The son of Frederick II Eugene, Duke of W\u00fcrttemberg and of Sophia Dorothea of Brandenburg-Schwedt.", "His sister Sophie Dorothea married Tsar Paul I of Russia."]], ["Christoph, Duke of W\u00fcrttemberg", ["Christoph of W\u00fcrttemberg, Duke of W\u00fcrttemberg (12 May 1515 \u2013 28 December 1568) ruled as Duke of W\u00fcrttemberg from 1550 until his death in 1568."]], ["Duchess Marie of W\u00fcrttemberg", ["Duchess Marie of W\u00fcrttemberg (Antoinette Friederike Auguste Marie Anna Herzogin von W\u00fcrttemberg; 17 September 1799 \u2013 24 September 1860) was a daughter of Duke Alexander of W\u00fcrttemberg and Antoinette of Saxe-Coburg-Saalfeld.", "She was Duchess of Saxe-Coburg and Gotha from 1832 to 1844 as the second wife of Duke Ernest I.", "As such, she was the stepmother of Prince Albert, consort of Queen Victoria."]], ["Duke Alexander of W\u00fcrttemberg (1804\u20131885)", ["Duke Alexander Paul Ludwig Konstantin of W\u00fcrttemberg( 9 September 1804, Saint Petersburg \u2013 4 July 1885 T\u00fcffer) was the father of Francis, Duke of Teck and the grandfather of Mary of Teck, wife of George V of the United Kingdom.", "His father was Duke Louis of W\u00fcrttemberg, brother of King Frederick I of W\u00fcrttemberg and Empress Maria Feodorovna of Russia.", "His mother was Princess Henriette of Nassau- Weilburg, a great- granddaughter of George II of Great Britain through his eldest daughter Anne, Princess of Orange."]], ["Duchess Marie-Th\u00e9r\u00e8se of W\u00fcrttemberg", ["Duchess Marie Th\u00e9r\u00e8se of W\u00fcrttemberg (born 12 November 1934) known as Duchess of Montpensier, is a German-born aristocrat.", "A daughter of the claimant to the royal throne of W\u00fcrttemberg, abolished in 1918, she was the first wife of Prince Henri, Count of Clermont.", "Duchess Marie Th\u00e9r\u00e8se is the mother of Prince Jean, Duke of Vend\u00f4me, head of the House of Orl\u00e9ans and Orl\u00e9anist claimant to the French throne."]], ["Prince Eudes, Duke of Angoul\u00eame", ["Prince Eudes Thibaut Joseph Marie of Orl\u00e9ans, Duke of Angoul\u00eame( born 18 March 1968), is the youngest son of Henri, Count of Paris, Duke of France, the late Orleanist claimant to the throne of France, and of Duchess Marie Therese of W\u00fcrttemberg."]], ["Princess Augusta of W\u00fcrttemberg", ["Princess Augusta of W\u00fcrttemberg( 4 October 1826 in Stuttgart \u2013 3 December 1898, ibid.) was a daughter of King William I of W\u00fcrttemberg and his wife, Pauline of W\u00fcrttemberg."]], ["Princess Catherine of W\u00fcrttemberg", ["Princess Catherine Frederica Charlotte of W\u00fcrttemberg (Stuttgart, 24 August 1821 \u2013 Stuttgart, 6 December 1898) was a daughter of William I of W\u00fcrttemberg and Pauline Therese of W\u00fcrttemberg.", "She was the mother of William II of W\u00fcrttemberg."]]]
supporting_facts: [["Duchess Marie of W\u00fcrttemberg", 0], ["Duke Alexander of W\u00fcrttemberg (1771\u20131833)", 2]]
evidences: [["Duchess Marie of W\u00fcrttemberg", "father", "Duke Alexander of W\u00fcrttemberg"], ["Duke Alexander of W\u00fcrttemberg", "father", "Frederick II Eugene, Duke of W\u00fcrttemberg"]]
answer: Frederick II Eugene, Duke of Württemberg