Re Zarco-His parents were Gonçalo Esteves Zarco and wife Brites de Santarém (daughter of João Afonso de Santarém (himself the son of Afonso Guilherme de Santarém, the son of Guilherme de Santarém, son of another Afonso Guilherme de Santarém) and wife Filipa Lopes de Couros, male line ancestors of Frei Luís de Sousa). His father was the son of Estêvão Pires Zarco, son of Pedro Esteves Zarco, son of Estêvão Gonçalves Zarco, son of Gonçalo ... Zarco.