Petrópolis branch

The Petrópolis branch (Portuguese: Ramo de Petrópolis) is formed by the descendants of Pedro de Alcântara, Prince of Grão-Pará, the first son of Isabel I of Brazil. However, with the resignation of Pedro de Alcântara to the alleged imperial throne of Brazil so that he could marry Countess Elisabeth Dobrženský of Dobrženitz, he abdicated his rights, which passed to his brother, Luís, Prince Imperial of Brazil, who gave rise to the so-called Vassouras branch.

Later, son of Pedro de Alcântara, Prince of Grão-Pará, Pedro Gastão, Prince of Brazil, sought to regain the leadership of the House of Orléans-Braganza. During the period of the 1993 Brazilian plebiscite, in which a popular referendum sought to assess which form and system of government the Brazilian population would prefer, some members of the Petropolis branch revived the dynastic theme.