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.
House of Guise
Their principal title, Duke de Guise in 1688 was awarded to a branch of the House of Bourbon and afterwards to the House of Orléans. The title, with one exception, was not used by pretenders to throne of France (that is, French throne but-for-the-French Revolution of 1848). One of its heads, Prince Jean, Duke of Guise (1874 – 1940) nonetheless took it as his title of pretence to the former crown of France, supported by some of the 19th century Orleanist activists. These formed for at the time the junior set of Legitimists – claimants to be senior, rightful descendants of the pre-1848 French Royal Family and supported by restorative movements before, during and after the Second French Empire of Emperor Napoleon III, the last undoubted monarch of France. By the end of the 1880s, a series of republican Presidents during the relatively young French Third Republic largely ended any hope of a restored monarchy.