question: Who is Ferdinand, Duke Of Viseu's maternal grandfather?
context: [["Infante Miguel, Duke of Viseu", ["Infante Dom Miguel, Duke of Viseu( born 3 December 1946) is a member of the Portuguese royal family, as the second child of Duarte Nuno, Duke of Braganza, and Princess Maria Francisca of Orl\u00e9ans- Braganza.", "The Duke of Viseu is fourth in the Line of succession to the former Portuguese throne, behind his elder brother, Duarte Pio, Duke of Braganza, and his three children.", "The Duke of Viseu is a noted patron of the arts and painter, and the founder and sponsor of the annual Luso- Brazilian Week of Aldravist Art, held interchangeably between Portugal and Brazil.", "He is also an active member in various orders of chivalry, notably the Sovereign Military Order of Malta and the Sacred Military Constantinian Order of Saint George."]], ["Eleanor of Aragon, Queen of Portugal", ["Eleanor of Aragon (2 May 1402 \u2013 19 February 1445) was queen consort of Portugal as the spouse of Edward I of Portugal and the regent of Portugal as the guardian of her son.", "She was the daughter of Ferdinand I of Aragon and Eleanor of Alburquerque."]], ["John, Prince of Portugal (1451)", ["John, Prince of Portugal was a Portuguese infante, son of Afonso V and Isabella of Coimbra.", "He was born heir to the throne in 1451, but he died young during the same year.", "The title of Prince of Portugal then passed again to Infante Ferdinand, Duke of Viseu, his uncle."]], ["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."]], ["Isabel of Viseu", ["Isabel of Viseu( 1459 \u2013 1521) was a daughter of Infante Fernando, Duke of Viseu and his wife and cousin Infanta Beatrice, Duchess of Viseu.", "She was a member of the House of Aviz and later, House of Braganza."]], ["Ferdinand, Duke of Viseu", ["Infante Ferdinand, Duke of Viseu and Beja (or \"Fernando,\" , 1433 \u2013 1470) was the third son of Edward, King of Portugal and his wife Eleanor of Aragon."]], ["Dinis of Braganza, Count of Lemos", ["Dinis of Braganza( 1481 \u2013 1516) was the younger son of Fernando II, Duke of Braganza and Isabella of Viseu who was a daughter of Infante Fernando, Duke of Viseu and Beatrice of Portugal."]], ["Jo\u00e3o de Lencastre, 1st Duke of Aveiro", ["Jo\u00e3o de Lencastre(?, 1501 \u2013 Coimbra, 1571), was the older son of Infante George, Duke of Coimbra and of his wife\" Dona\" Beatriz of Vilhena.", "Through his father, John was a grandchild of King John II of Portugal and a 3rd cousin to King Manuel I of Portugal.", "Through his mother, daughter of \u00c1lvaro of Braganza( 4th male son of Fernando I, 2nd Duke of Braganza), John of Lencastre was close related to the most prestigious aristocratic families of the Kingdom( namely the Duke of Braganza, the Marquis of Ferreira, the Marquis of Vila Real, the Count of Vimioso, the Count of Portalegre).", "When he was 12 years old, he served crown prince John( who became later King John III of Portugal) and King Manuel I granted him the title of Marquis of Torres Novas by a royal decree issued on March 27, 1520.", "In that time, the royal house announced the marriage of Infante Ferdinand, Duke of Guarda( King Manuel I younger son) to the richest and prestigious heir\" Dona\" Guiomar Coutinho, 5th Countess of Marialva and the 3rd Countess of Loul\u00e9.", "However, John of Lencastre declared he had secretly married the richest bride.", "The scandal in the Court ended when King John III ordered the Marquis imprisonment in the Castle of S\u00e3o Jorge, in Lisbon, allowing the celebration of the Infante Ferdinand's marriage.", "After nine years, when he was released, he went to live in Set\u00fabal, maybe ashamed for the situation, and he only returned to the Court in 1535, to escort Infante Luis, Duke of Beja, who was leading the Portuguese fleet in Charles V \u2019s crusade against Tunis.", "In that year King John III granted him the title of Duke of Aveiro.", "After his return from Madrid, in 1537( where he was sent by King John III to present formal condolences to Charles V, when his wife, Empress Isabel of Portugal, died) John of Lencastre, 1st Duke of Aveiro, decided to marry to\" Dona\" Juliana de Lara, daughter of the 3rd Marquis of Vila Real.", "In 1552, he was again chosen by the King to escort, from the border to Lisbon, the Infanta Joan of Spain, who would marry John, Crown Prince of Portugal( John III only surviving son).", "John of Lencastre and Juliana de Lara had two sons: John of Lencastre wrote several books and built a magnificent convent in Arr\u00e1bida, near Set\u00fabal, where an annual music festival takes place."]], ["Diogo, Duke of Viseu", ["Infante Diogo of Viseu( 1450 \u2013 1484) was the second son of Ferdinand, Duke of Viseu, and his wife Beatriz, Duchess of Viseu."]], ["Jo\u00e3o, Duke of Viseu", ["Infante Jo\u00e3o of Viseu( c. 1448 1472) was the older son of Infante Fernando, Duke of Viseu and of his wife Infanta Beatrice of Portugal.", "In 1470, following his father's death, he inherited the titles of Duke of Viseu and Duke of Beja, as well as the Lordships of Covilh\u00e3 and Moura.", "He also became Master of the Order of Christ and of the Order of Santiago, becoming also Constable of Portugal.", "In July 1472, his uncle, King Afonso V granted him the Moroccan city of Anfa( in Portuguese\" Anaf\u00e9\").", "He died young and single, without issue.", "His brother, Infante Diogo, inherited his titles and estates."]]]
supporting_facts: [["Ferdinand, Duke of Viseu", 0], ["Eleanor of Aragon, Queen of Portugal", 1]]
evidences: [["Infante Ferdinand, Duke of Viseu", "mother", "Eleanor of Aragon"], ["Eleanor of Aragon", "father", "Ferdinand I"]]
answer: Ferdinand I