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
Bourbon claim to the Spanish throne around 824 when they rebelled against nominal Carolingian authority. In 905, a coalition of neighbors forced Fortún Garcés, a grandson of Íñigo Arista, to retire to a monastery, and enthroned in his place a scion of a new dynasty, under which, the name Navarre began to supplant that of Pamplona. With the assassination of Sancho IV, the last king of the aforementioned dynasty, Navarre was invaded by his cousins Alfonso VI of Castile and Sancho Ramirez of Aragon, and the latter made king, leading to a half-century of Aragonese control. The death of Alfonso led to a succession crisis in