Prince Carlo of Bourbon-Two Sicilies, Duke of Castro (born 24 February 1963) is one of the two claimants to the headship of the former House of Bourbon-Two Sicilies. Early life Prince Carlo was born at Saint-Raphaël, Var, France, as the only son of Ferdinand, Duke of Castro, and his wife, Chantal de Chevron-Villette. Marriage and issue On 31 October 1998, Prince Carlo married Camilla Crociani, daughter of Italian billionaire Camillo Crociani and his second wife, Italian actress Edy Vessel. Together Carlo and Camilla have two children: Princess Maria Carolina, Duchess of Calabria, Duchess of Palermo (born 2003) Princess Maria Chiara, Duchess of Noto, Duchess of Capri (born 2005) Claimed headship of the House of Bourbon-Two Sicilies In 2008, Carlo succeeded to his father's claim as head of the House of the Two Sicilies and use of the title Duke of Castro. This claim is disputed by the Spanish branch of the House of the Two Sicilies. As claimant to the headship of the house, he thus also claims to be sovereign of the Sacred Military Constantinian Order of Saint George as well as the Royal Order of Francis I. The dispute between the Castroan and Spanish branches of the family began after the death of the last uncontested head of the house, Ferdinand Pius, in 1960. By male primogeniture, the immediate male heir of Ferdinand Pius was his nephew Infante Alfonso, the son of Pius's eldest younger brother Carlos. Carlos married María de las Mercedes, Princess of Asturias, the heir presumptive of Spain, in 1901. As a result of the marriage, his family forced Carlos to renounce his "eventual succession to the crown" of the Two Sicilies, in line with the centuries-old agreement that the crowns of Spain and Two Sicilies were not to unify. Although this renunciation was interpreted by some as removing Carlos and his descendants from the line of succession of the Two Sicilies, supporters of Alfonso argued that the renunciation would only have applied if Carlos's wife or an eventual son had actually become the sovereign of Spain, which did not happen and would have most likely not happened at the time of the signing regardless. Nevertheless, Ferdinand Pius's and Carlos's younger brother, Ranieri, began to regard himself as Pius's heir. Upon Pius's death, both Ranieri and Alfonso claimed to be the legitimate heads of the family. Alfonso's line of the family (today represented by Carlo's