 The dynastic dispute over the Brazilian crown began after 1940 when Prince Pedro Gastão of Orléans-Braganza, eldest son of Pedro de Alcântara repudiated his father's renunciation and claimed the headship of the Brazilian Imperial House.After the death of Pedro Gastão in 2007, his eldest son Prince Pedro Carlos and younger children declared themselves republicans.Several of Pedro Gastão's grandchildren also have dual citizenship.