Prince Sixtus Henry of Bourbon-Parma Prince Sixtus Henry of Bourbon-Parma Prince Sixtus Henry of Bourbon-Parma (; ; born 22 July 1940) is considered Regent of Spain by some Carlists who accord him the titles Duke of Aranjuez, Infante of Spain, and Standard-bearer of Tradition. Sixtus was born in Pau, Pyrénées-Atlantiques during the World War II Vichy regime of France, the second son of Prince Xavier of Bourbon-Parma (then Prince Regent, later Carlist pretender to the throne of Spain, later titular Duke of Parma) and his wife Madeleine de Bourbon-Busset. He belongs to a cadet branch of the former royal dynasty of France (and current dynasty
House of Bourbon at least from the beginning of the 13th century, when the estate of Bourbon was ruled by the Sire de Bourbon who was a vassal of the King of France. The term House of Bourbon ("Maison de Bourbon") is sometimes used to refer to this and the House of Bourbon-Dampierre, the second family to rule the seigneury. In 1272, Robert, Count of Clermont, sixth and youngest son of King Louis IX of France, married Beatrix of Bourbon, heiress to the lordship of Bourbon and member of the House of Bourbon-Dampierre. Their son Louis was made Duke of Bourbon in 1327.