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 Braganza atop the Portuguese Crown Sceptre, the Sceptre of the Dragon and the Sceptre of the Emperor of Brazil. The wyvern is also sometimes used as a supporter in the coat of arms of both the Brazilian and Portuguese branches of the family. Because of its use in heraldry by the Braganza as the ruling house, and given Pedro IV's link with Porto, a dragon was added to the old coat of arms of the municipality of Porto and is still a part of FC Porto's coat of arms, who are nicknamed "The Dragons". Since the 17th century, the House of