House of Braganza him the nickname the "Grandfather of Europe" ("see Descendants of Miguel I of Portugal"). On 7 September 1822, Dom Pedro of Braganza, Prince Royal of Portugal, Brazil and the Algarves, member of the House of Braganza, heir apparent to the Portuguese throne and Regent of the Kingdom of Brazil, declared the country's independence from the United Kingdom of Portugal, Brazil and the Algarves and was acclaimed Emperor of Brazil. On 12 October, the prince was acclaimed Pedro I, first Emperor of the newly created Empire of Brazil, a constitutional monarchy. In 1825, signing the treaty of Rio de Janeiro of
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