Isabel of Braganza, Duchess of Guimarães Isabel of Braganza, Duchess of Guimarães Dona Isabel of Braganza (1514 – 16 September 1576) was a member of the House of Braganza, daughter of Jaime, Duke of Braganza (a nephew of Manuel I of Portugal) and Leonor Pérez de Guzmán. Isabel married her cousin Infante Duarte a son of Manuel I and Maria of Aragon in 1537. Isabel was dowried with the Dukedom of Guimarães, which had belonged to her brother Teodósio I, Duke of Braganza. After the marriage, Infante Duarte became the 4th Duke of Guimarães. Her younger daughter Catherine became the Duchess of Braganza and had a
House of Braganza Eugénia of Braganza, married Francisco de Melo, 2nd Marquis of Ferreira. Jaime I's only other son, other than Teodósio I, to not enter into the church, Constantino of Braganza, married Maria de Melo, daughter of D. Rodrigo de Melo, 1st Marquis of Ferreira, but had no children. Constantino was famed as a great officer of the Portuguese Empire, having served as the Viceroy of Portuguese India and Captain of Ribeira Grande, among other positions. The fifth Duke, Teodósio I, is remembered for being the personification of the Portuguese Renaissance. A patron of the arts and scholarly noble, Teodósio I maintained