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
Prince Luiz Gastão of Orléans-Braganza in Dreux. After his death, his sister Princess Pia Maria became the titular heir of her brother Pedro Henrique, until the birth of Pedro Henrique's son, also called Prince Luiz, in 1938. Prince Luiz Gastão of Orléans-Braganza Prince Luiz Gastão of Orléans-Braganza (; 19 February 19118 September 1931) was a member of the House of Orléans-Braganza, and was descended from the Brazilian Imperial Family. Prince Luiz Gastão was born at Cannes, France, the second son of Prince Luiz of Orléans-Braganza (1878–1920), and his wife, Princess Maria di Grazia of Bourbon-Two Sicilies (1978–1963). His father was the second son of Prince