Louis Alphonse, Duke of Anjou
Louis Alphonse was born in Madrid, the second son 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", and on 19 September 1981 gave Louis Alphonse the title Duke of Touraine.
Bourbon claim to the Spanish throne
Philip of France, Duke of Anjou, was the second son of Louis, "le Grand Dauphin" and Maria Anna of Bavaria, known as "Dauphine Victoire", a younger brother of Louis, Duke of Burgundy and an uncle of Louis XV of France.
Philip was born at the Palace of Versailles in France. His older brother, Louis, Duke of Burgundy, was in line to the throne right after his father, "Le Grand Dauphin", thus leaving him and his younger brother, Charles, Duke of Berry little expectation to ever rule over France. However, his fortune (and that of his grandfather Louis XIV) started looking up when the degenerate last monarch of Spain, Charles II, fell ill. Both of Charles's marriages had failed to produce any offspring.
Charles II married Marie Louise of Orléans (1662–1689), eldest daughter of Philippe I, Duke of Orléans, the only sibling of Louis XIV, and his first wife Princess Henrietta of England. It is likely that Charles was impotent, and no children were born. Marie Louise became deeply depressed and died at 26, ten years after their marriage, leaving 28-year-old Charles heartbroken. Still in desperate need of a male heir, the next year he married the 23-year-old Palatine princess Maria Anna of Neuburg, a daughter of Philip William, Elector of the Palatinate, and sister-in-law of his uncle Leopold I, Holy Roman Emperor. However, this marriage was no more successful than the first in producing the much-desired heir.