Louis Alphonse, Duke of Anjou
Their father has conferred upon them the historic French titles of, respectively, Duke of Burgundy ("duc de Bourgogne"), and Duke of Berry ("duc de Berry"). (In Spain, the twins are "Don" Luis and "Don" Alfonso de Borbón Vargas). Prince Louis, as Legitimist Dauphin of France, is expected to succeed his father as head of the French royal house, the senior Bourbon/Capetian line, in Legitimist reckoning. However, under Spanish law, and assuming Felipe VI does not in future father a son, the Spanish crown will be inherited by his elder daughter Leonor, Princess of Asturias, who will become queen regnant, and if Felipe does have a son, that son will inherit the Spanish throne regardless of the genealogical seniority of the Anjou branch. Louis and Alphonse were baptised on 5 September 2010 at St Peter's Basilica in Vatican City. Louis' godparents were Arancha Martínez-Bordíu and Francisco D'Agostino and Alphonse's were Amparo Corell de Trenor, and Lorenzo Perales.
Line of succession to the French throne (Orléanist)
Despite the fact that some Orléanists considered that the severe disabilities of Prince François should exclude him from the line of succession, and his younger brother Vendôme was appointed his permanent legal guardian, their father recognized his eldest son as the "Dauphin". François, however, died without issue in 2017, thereby rendering moot the "council of regency" the Count of Paris had created to exercise future dynastic authority in his son's behalf and resolving the public dispute that decision had evoked within the family: In January 2018 the Count of Paris recognized the Duke of Vendôme as his rightful successor.