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,
Duarte Pio, Duke of Braganza Duarte Pio, Duke of Braganza "Dom" Duarte Pio, Duke of Braganza (Duarte Pio João Miguel Gabriel Rafael; born 15 May 1945) is a claimant to the defunct Portuguese throne, as the head of the House of Braganza. The Miguelist Braganzas, to whom Duarte Pio belongs as great-grandson of King Miguel I, is a cadet branch of the House of Braganza. With the extinction of male-line dynasts descended from Queen Maria II in 1932, King Miguel's descendants became the only male-line Braganzas left and the closest male-line heirs to the Portuguese throne (the Brazilian branch having gone extinct in 1921). Duarte