Spanish-French nobility, born the senior male heir of Hugh Capet (c. 941 – 24 October 996), alias “Hugh the Great” (the first “King of the Franks”), being the senior descendant of King Louis XIV of France (ruled 1643–1715) through his grandson King Philip V of Spain. He was a great-grandson of King Alfonso XIII of Spain and first cousin once removed of King Juan Carlos I of Spain. Through his mother, he was also a great-grandson of Spain’s former dictator Francisco Franco.
Francisco was the eldest of the two sons of Alfonso de Borbón, Duke of Anjou and Cádiz, and of his wife María del Carmen Martínez-Bordiú y Franco, eldest granddaughter of Francisco Franco. Alfonso was at that time the dauphin (using “Duke of Bourbon” as title of pretence) according to those who supported the claim of his father, Infante Jaime, Duke of Segovia to the French throne. On 20 March 1975, the Infante Jaime (“Henri VI” by Legitimist reckoning) died. Alfonso then asserted his claim to be both Head of the House of Bourbon and Legitimist claimant to the throne of France and the Co-Principality of Andorra. As such, he took the title “Duke of Anjou”.
On 7 February 1984, Francisco died at age 11 as the result of a car crash in which his younger brother Louis Alphonse was also injured, although less so than their father, who was driving the automobile. From that date Louis Alphonse was recognised as the heir apparent to his father by the Legitimists.
Link to Wikipedia biography (Spanish)