Pedro Álvares Cabral
Margarita Cabral de Melo and his sister were relatives of Pedro Álvares Cabral, discoverer of Brazil and Gonçalo Velho Cabral, discoverer of Azores. His most notorious ancestors were Álvaro Martins Homem 3°Captain of Praia, and João Fernandes de Andrade, possibly a descendant of Richard, 1st Earl of Cornwall.