Greek Orthodoxy to Catholicism to become more palatable to Catholic Spain, and thus relinquished her rights to the Greek throne. Along with this, the usual Latinisation of her Greek name was changed from Sophia to the Spanish variant, Sofía. Sofía was in Greece on a private visit to her brother, King Constantine II, when the 1967 Greek military coup took place. Except for a brief stay for the funeral of her mother in 1981, Queen Sofía would not visit the Hellenic Republic until 1998. In 1969, Infante Juan Carlos, who was never Prince of Asturias (the traditional title of the Spanish heir apparent), was given the official title of "Prince of Spain" by the Francoist dictatorship. Juan Carlos acceded to the throne in 1975, upon the death of Francisco Franco. Juan Carlos, after his accession to the Spanish throne, returned with his family to the Zarzuela Palace. The couple has three children: Elena (born 20 December 1963); Cristina (born 13 June 1965); and Felipe (born 30 January 1968). Activities Besides accompanying her husband on official visits and occasions, Sofía also has solo engagements. She is executive president of the Queen Sofía Foundation, which in 1993, sent funds for relief in Bosnia and Herzegovina, and is honorary president of the Royal Board on Education and Care of Handicapped Persons of Spain, as well as the Spanish Foundation for Aid for Drug Addicts. Additionally, she has served as the patroness of the Queen Sofía Spanish Institute since 2003. Sofía takes special interest in programs against drug addiction, travelling to conferences in both Spain and abroad. The Museo Nacional Centro de Arte Reina Sofía is named after her, as is Reina Sofía Airport in Tenerife. Sofía is an Honorary Member of the San Fernando Royal Academy of Fine Arts and of the Spanish Royal Academy of History. She has received honorary doctorates from the Universities of Rosario (Bogotá), Valladolid, Cambridge, Oxford, Georgetown, Evora, St. Mary's University (Texas), and New York. A keen supporter of sport, Sofía also attended the final match of the 2010 Wimbledon Championships – Men's Singles where she watched Spanish tennis champion Rafael Nadal win for a second time, as well as the 2010 FIFA World Cup where the Spanish team was crowned as world champion. Sofía has been honorary president of the Spanish Unicef Committee since 1971. She has been working closely with Dr. Muhammad Yunus on his Grameen