Catarina, Duchess of Braganza Catarina, Duchess of Braganza Infanta Catherine of Guimarães, Duchess of Braganza by marriage (Portuguese: Catarina; , 18 January 1540 – 15 November 1614) was a Portuguese "infanta" (princess) claimant to the throne following the death of King Henry of Portugal in 1580. She was the second daughter of Infante Edward, 4th Duke of Guimarães (sixth son of Manuel I of Portugal) and Isabella of Braganza, she was married to John, 6th Duke of Braganza, a descendant of earlier Portuguese monarchs, and head of the most important aristocratic House in Portugal. The duchess had several children, of whom Teodósio of Braganza,
House of Orléans-Braganza had 3 surviving sons which were the first to use the surname "Orléans-Braganza": Pedro de Alcântara, Prince of Grão-Pará, Prince Luís and Prince Antônio. Both Prince Pedro and Prince Luís have children. Today they are the present claimants to the throne of the former Empire of Brazil, which became extinct with the Brazilian proclamation of the republic, on 15 November 1889 after a military coup d'état headed by Marshall Deodoro da Fonseca, the 1st President of Brazil. After the death of Princess Isabel on 1921, the House of Orléans-Braganza became the claimant of the Brazilian throne under Prince Pedro Henrique