question: Who is Piers Fitzthomas Butler's paternal grandfather?
context: [["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]], ["Thomas Butler, 10th Earl of Ormond", ["Thomas Butler, 10th Earl of Ormonde, 3rd Earl of Ossory, Viscount Thurles (c. 153122 November 1614), was an Irish peer and the son of James Butler, 9th Earl of Ormond and Lady Joan Fitzgerald daughter and heiress-general of James FitzGerald, 10th Earl of Desmond.", "He was Lord Treasurer of Ireland and a very prominent personage during the latter part of the 16th century."]], ["Kaya Alp", ["Kaya Alp was, according to Ottoman tradition, the son of K\u0131z\u0131l Bu\u011fa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertu\u011frul, and the great grandfather of the Ottoman Empire founder, Osman I."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["Zhao Shoushan", ["Zhao Shoushan( 12 November 1894 \u2013 20 June 1965) was a KMT general and later Chinese Communist Party politician.", "He is the grandfather of Zhao Leji."]], ["Edward Butler, 1st Viscount Galmoye", ["Sir Edward Butler, 1st Viscount Galmoye( died 1653) was the eldest son of Piers FitzThomas Butler and the Honourable Katherine Fleming, daughter and co-heiress of Thomas Fleming, 10th Baron Slane and his wife Catherine Preston.", "His father was the illegitimate son of Thomas Butler, 10th Earl of Ormond.", "Edward Butler was invested as a Knight on 1 November 1619.", "He held the office of High Sheriff of County Kilkenny, Ireland in 1640.", "In 1646 he attended the Confederation of Kilkenny.", "He was created 1st Viscount Galmoye on 16 May 1646.", "He lived at Galmoy Castle, County Kilkenny.", "He died in 1653 and was succeeded by his grandson, Edward Butler."]], ["Henry Krause", ["Henry J.\" Red\" Krause, Jr.( August 28, 1913 \u2013 February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.", "He played college football at St. Louis University.", "He is the grandfather of Jennifer Krause", "He is the great grandfather of Payton Hoeing"]], ["Fred Le Deux", ["Frederick\" Fred\" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).", "He is the grandfather of Tom Hawkins."]], ["Piers FitzThomas Butler", ["Piers FitzThomas Butler of Duiske (died 1601), was the illegitimate son of Thomas Butler, 10th Earl of Ormond.", "The lands of Duiske Abbey had reverted to his father.", "In 1597, the earl executed a deed of conveyance in his favour for the lands (when Piers had reached maturity)."]]]
supporting_facts: [["Piers FitzThomas Butler", 0], ["Thomas Butler, 10th Earl of Ormond", 0]]
evidences: [["Piers FitzThomas Butler", "father", "Thomas Butler, 10th Earl of Ormond"], ["Thomas Butler, 10th Earl of Ormond", "father", "James Butler"]]
answer: James Butler