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
Duarte Nuno, Duke of Braganza Nuno married Princess Maria Francisca of Orléans-Braganza, daughter of Pedro de Alcântara, Prince of Grão-Pará. Their marriage reconciled two branches of the House of Braganza, in two different ways, reuniting the Portuguese and Brazilian Brigantine houses and specifically reuniting the Miguelist and Liberal Braganzas, which had been estranged since 1828, when the War of Two Brothers was waged between King-Emperor Pedro IV & I, founder of the Liberal Braganzas, and King Miguel I, founder of the Miguelist Braganzas. The couple had three sons, the eldest of whom is Duarte Pio, Duke of Braganza, the current pretender to the defunct Portuguese