question: Who is Raghnall Mac Ruaidhrí's paternal grandfather?
context: [["Raghnall Mac Ruaidhr\u00ed", ["Raghnall Mac Ruaidhr\u00ed (died October 1346) was an eminent Scottish magnate and chief of Clann Ruaidhr\u00ed.", "Raghnall's father, Ruaidhr\u00ed Mac Ruaidhr\u00ed, appears to have been slain in 1318, at a time when Raghnall may have been under age.", "Ruaidhr\u00ed himself appears to have faced resistance over the Clann Ruaidhr\u00ed lordship from his sister, Cairist\u00edona, wife of Donnchadh, a member of the comital family of Mar.", "Following Ruaidhr\u00ed's demise, there is evidence indicating that Cairist\u00edona and her powerful confederates also posed a threat to the young Raghnall.", "Nevertheless, Raghnall eventually succeeded to his father, and first appears on record in 1337.", "Raghnall's possession of his family's expansive ancestral territories in the Hebrides and West Highlands put him in conflict with the neighbouring magnate William III, Earl of Ross, and contention between the two probably contributed to Raghnall's assassination at the hands of the earl's adherents in 1346.", "Following his death, the Clann Ruaidhr\u00ed territories passed through his sister, \u00c1ine, into the possession of her husband, the chief of Clann Domhnaill, E\u00f3in Mac Domhnaill I, Lord of the Isles, resulting in the latter's consolidation of power in the Hebrides as Lord of the Isles."]], ["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"]], ["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."]], ["Amy of Garmoran", ["Amy of Garmoran also known as Amie MacRuari and Euphemia was a 14th- century Scottish noblewoman who was the sister of Raghnall mac Ruaidhri, Lord of Garmoran and the spouse of John of Islay.", "After her marriage had produced three sons, the ambitious John of Islay divorced her in order to re-marry and cement his links with the House of Stewart.", "She then retired to her estates in the Highlands and Islands, and completed various ecclesiastical and other building projects.", "Her son Ranald was the progenitor of Clanranald."]], ["Lyon Cohen", ["Lyon Cohen( 1868\u20131937) was a Polish- born Canadian businessman and a philanthropist.", "He was the grandfather of singer/ poet Leonard Cohen."]], ["Ruaidhr\u00ed Mac Ruaidhr\u00ed", ["Ruaidhr\u00ed Mac Ruaidhr\u00ed (died 14 October 1318?) was a fourteenth-century Scottish magnate and chief of Clann Ruaidhr\u00ed.", "He was an illegitimate son of Ail\u00e9an mac Ruaidhr\u00ed, and is recorded to have participated in the kindred's military actions against supporters of both the English Crown and Scottish Crown.", "Following the apparent death of his brother, Lachlann, Ruaidhr\u00ed appears to have taken control of the kindred, and firmly aligned the family with Robert I, King of Scotland.", "Ruaidhr\u00ed may well be the member of Clann Ruaidhr\u00ed who is recorded slain at the Battle of Faughart in support of the Bruce cause in Ireland.", "After his death, Ruaidhr\u00ed's half-sister, Cairist\u00edona, attempted to transfer the Clann Ruaidhr\u00ed territories outwith the family.", "Ruaidhr\u00ed was survived by a daughter, \u00c1ine, and an illegitimate son, Raghnall.", "The latter fended off Cairist\u00edona's actions and succeeded to the chiefship of Clann Ruaidhr\u00ed."]], ["John Westley", ["Rev. John Westley( 1636 \u2013 78) was an English nonconformist minister.", "He was the grandfather of John Wesley( founder of Methodism)."]], ["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."]], ["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."]], ["Abd al-Muttalib", ["Abd al- Muttalib Shaybah ibn Hashim( c. 497 \u2013 578) was the grandfather of Islamic prophet Muhammad."]]]
supporting_facts: [["Raghnall Mac Ruaidhr\u00ed", 1], ["Ruaidhr\u00ed Mac Ruaidhr\u00ed", 1]]
evidences: [["Raghnall Mac Ruaidhr\u00ed", "father", "Ruaidhr\u00ed Mac Ruaidhr\u00ed"], ["Ruaidhr\u00ed Mac Ruaidhr\u00ed", "father", "Ail\u00e9an mac Ruaidhr\u00ed"]]
answer: Ailéan mac Ruaidhrí