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 Antônio of Orléans-Braganza Prince Antônio of Orléans-Braganza Prince Antônio of Orléans-Braganza (born June 24, 1950), whose baptismal name is "Antônio João Maria José Jorge Miguel Gabriel Rafael Gonzaga de Orléans e Bragança e Wittelsbach", is a member of the Imperial House of Brazil. Antônio was born in Rio de Janeiro, the sixth son of Prince Pedro Henrique of Orléans-Braganza and of his wife, Princess Maria of Bavaria. In 1976, Antônio earned a bachelor's degree in Engineering (with a specialization in Major Structural Projects) from the University of Barra do Piraí. Dom Antônio's eldest brother is Prince Luiz of Orléans-Braganza, the current Head of