Isabel of Braganza, Duchess of Guimarães claim to the throne of Portugal. She was also part of the succession crisis. This marriage produced three children: 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
House of Orléans-Braganza to the marriage. Isabel and Leopoldina were not informed until Gaston and August were mid-Atlantic. Arriving in early September, Gaston described the princesses as "ugly", but thought Isabel less so than her sister. For her part, Isabel in her own words "began to feel a great and tender love" for Gaston.[65] The two couples: Gaston and Isabel; August and Leopoldina; were engaged on 18 September. On 15 October 1864 at Rio de Janeiro, Prince Gaston married Isabel, Princess Imperial of Brazil and heiress of the Empire. It was from that marriage the royal house of Orléans-Braganza was formed. The couple