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.
Legitimists
Legitimists hold that the king of France must be according to the traditional rules of succession based on the Salic law. When the direct line of Charles X became extinct in 1883 with the death of his grandson Henri, Count of Chambord, the most senior heir to the throne under these traditional rules was Juan, Count of Montizón, a descendant of Louis XIV through his grandson Philip V of Spain. The fact that all French Legitimist claimants since 1883 have been members of the Spanish royal dynasty remains irrelevant to Legitimism, but it has prompted other French monarchists to pivot to support of the Orléans line.