question: Who is the maternal grandmother of Lady Susan Hamilton?
context: [["H\u00fcma Hatun", ["H\u00fcma Hatun (1410 \u2012 September 1449) was the fourth wife of Ottoman Sultan Murad II and mother of Mehmed II and the grandmother of Bayezid II."]], ["Kaoru Hatoyama", ["After the elections of 2009, she became more widely known as the grandmother of Prime Minister Yukio Hatoyama and his politician brother Kunio Hatoyama."]], ["Susan Hamilton, Duchess of Hamilton", ["Susan Hamilton, Duchess of Hamilton (14 May 1786 \u2013 27 May 1859), formerly Susan(na)", "Euphemia Beckford, was the wife of Alexander Hamilton, 10th Duke of Hamilton, and the mother of the 11th Duke.", "Susan was born at Ch\u00e2teau La Tour, Vevay, in Switzerland.", "She was the daughter of William Thomas Beckford and his wife, the former Lady Margaret Gordon.", "Beckford was an art collector who made his home at Brodick Castle on the Isle of Arran.", "He was the son of a Lord Mayor of London, William Beckford (whose wife, Maria Hamilton, was a descendant of James Hamilton, Duke of Ch\u00e2tellerault, as was her future grandson-in-law).", "Lady Margaret was the daughter of Charles Gordon, 4th Earl of Aboyne.", "Susan Beckford married the future duke, then a former MP and styled Marquess of Douglas and Clydesdale, on 26 April 1810 in London.", "They had two children:", "Her daughter, also named Susan, caused the duke and duchess some concern by eloping with Horatio Walpole, by whom she had an illegitimate child, born in 1849.", "She lived abroad with Walpole for a time but returned to Britain for a time in 1853.", "The dowager duchess was a patron of the arts whose acquaintances included Alfred, Lord Tennyson.", "She inherited many of her father's works of art."]], ["Anne Denman", ["Anne Denman( 1587\u20131661) was born in Olde Hall, Retford, Nottinghamshire.", "Through a fortunate second marriage with Thomas Aylesbury, she became the grandmother of Lady Anne Hyde, Duchess of York and great- grandmother of Queen Mary II and Queen Anne."]], ["Mona Hopton Bell", ["Mona Hopton Bell( 1867- 1940) was a British artist, best known for her portraits of civic figures.", "She was the grandmother of the painter Jean H. Bell."]], ["Tjuyu", ["Tjuyu( sometimes transliterated as Thuya or Thuyu) was an Egyptian noblewoman and the mother of queen Tiye, and the wife of Yuya.", "She is the grandmother of Akhenaten, and great grandmother of Tutankhamun."]], ["Hubba bint Hulail", ["Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic\" Nab\u012b\"( Prophet) Muhammad ibn Abdullah."]], ["Lady Susan Hamilton", ["Lady Susan Harriet Catherine Opdebeck (9 June 181428 November 1889) was a Scottish aristocrat.", "The daughter of Alexander, 10th Duke of Hamilton and Susan Euphemia Beckford, she at once was a star of high society.", "An angelic child of great beauty and style", ", she attracted controversy after a high-profile divorce suit from the future Duke of Newcastle."]], ["Hannah Arnold", ["Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children."]], ["G\u00fclbahar Hatun (wife of Mehmed II)", ["G\u00fclbahar Hatun( 1432 \u2013 1492) was the consort of Sultan Mehmed II, and mother of Sultan Bayezid II of the Ottoman Empire and the grandmother of Selim I."]]]
supporting_facts: [["Lady Susan Hamilton", 1], ["Susan Hamilton, Duchess of Hamilton", 3]]
evidences: [["Lady Susan Hamilton", "mother", "Susan Euphemia Beckford"], ["Susan Hamilton, Duchess of Hamilton", "mother", "Margaret Gordon"]]
answer: Margaret Gordon