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
Duke of Bourbon had denied him the Bourbon inheritance and the inheritance of his wife, the sister of Charles IV, Duke of Alençon. Charles's son, Antoine, would become King of Navarre, and his grandson, Henry, would become King of France. All of the present-day family members descend from him. As the new reigning dynasty, the House of Bourbon-Vendôme was simply called the House of Bourbon. The title was vacant from 1523 to 1544. In 1523, Louise of Savoy, mother of King Francis I of France, challenged the succession to the estate of Suzanne, Duchess of Bourbon, who died childless. She claimed the succession