House of Braganza the prestige of the House of Braganza, although not leaving a significant mark on the House's history. The Duke notably ceded the Dukedom of Guimarães to Infante Duarte of Portugal as the dowry of his sister, Isabel of Braganza. Teodósio I's first son, Jaime of Braganza, died before he could inherit his father's titles, fighting alongside King Sebastião I at the Battle of Alcácer Quibir. The Duke's only daughter, Isabel of Braganza, married Miguel Luis de Meneses, 1st Duke of Caminha, though their union had no issue. Teodósio I's last child and successor, João I, lived a very different life
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