House of Bourbon-Braganza House of Bourbon-Braganza The House of Bourbon-Braganza (Spanish: Casa de Borbón-Braganza; Portuguese: Casa de Bourbon-Bragança) was an Iberian noble house that had its origins in a royal marriage arranged in 1785 between Infante Gabriel of Spain (1752–1788) and Infanta Mariana Victoria of Portugal (1768–1788). It was a short marriage: they both died three years later, in Madrid, with smallpox. Their surviving son, Infante Pedro Carlos of Spain and Portugal (1786–1812), was brought up in the Portuguese court, first in Lisbon and, after 1807, in Rio de Janeiro. Until 1793, he was the only grandson of Queen Maria I, therefore considered
Duarte Nuno, Duke of Braganza the (Austrian) Order of the Golden Fleece. Duarte Nuno is buried in the Augustinian monastery in Vila Viçosa, the traditional burial place of the Dukes of Braganza. As the head of the House of Braganza, Duarte Nuno held the following positions: Duarte Nuno, Duke of Braganza "Dom" Duarte Nuno, Duke of Braganza (23 September 1907 – 24 December 1976) was the claimant to the defunct Portuguese throne, as both the Miguelist successor of his father, Miguel, Duke of Braganza, and later as the head of the only Brigantine house, after the death of the last Legitimist Braganza, King Manuel II