Louis Alphonse de Bourbon

Louis Alphonse de Bourbon, Duke of Anjou (Spanish: Luis Alfonso Gonzalo Víctor Manuel Marco de Borbón y Martínez-Bordiú; born 25 April 1974) is regarded by French Legitimists as the head of the House of Bourbon and the rightful claimant to the defunct throne of France under the name Louis XX. His claim is based on his descent from Louis XIV (r. 1643–1715) through his grandson Philip V of Spain. Philip renounced his claim to the French throne under the Treaty of Utrecht in 1713. The rival Orleanist pretenders argue that this, as well as being born a Spanish citizen, makes Louis Alphonse ineligible for the throne.

Louis Alphonse is patrilineally the senior great-grandson of King Alfonso XIII of Spain. His grandfather Infante Jaime, Duke of Segovia, renounced his rights to the Spanish throne for himself and his descendants owing to his deafness. The crown of Spain has descended to his second cousin, King Felipe VI. Through his mother, he is also a great-grandson of Spain's caudillo (dictator) General Francisco Franco; and through his father, a great-great-great-grandson of Queen Victoria of the United Kingdom. Since the death of his father in 1989, he has used the courtesy title of Duke of Anjou.