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.
Monarchy of Monaco
The Prince is styled "His Serene Highness". Although used only formally, the Prince also bears several other hereditary titles, some of which are occasionally bestowed on his relatives or their spouses. Some of these titles have merged with the Crown of Monaco as a result of the Grimaldi family's acquisition of various fiefs; they no longer imply ownership or territorial authority, although the Princes of Monaco have long been substantial owners of land and in France. Most were granted or recognised by the Kingdom of France or the Papal States and could only pass through the male line; they therefore became extinct as French dignities on the death of Albert's great-grandfather Prince Louis II in 1949. Thereafter, some of these titles were implicitly re-created as distinctly Monegasque titles. The father of Prince Rainier III was Pierre Grimaldi, Duke of Valentinois, "né" Count Pierre de Polignac, whose legitimate male-line descendants (including Rainier III "et al.") remain remotely in the line of succession for the French dukedom of Polignac).