He was an honoured man and a much honoured Knight at the time of King John I of Portugal and an Escrivão da Puridade (Notary/Registrar of the Purity/Secret, furthermore, a Secretary) of the 2nd Constable of Portugal Nuno Álvares Pereira, and some say also his relative, in 1422, and Vedor (Overseer) of the things belonging to Ceuta in 1423.
Barreiros, a Genealogist, does not nominate him, in his Livro Ms., more than by Gil Aires, and says at the margins these words: And of Maria Trabuca and of one from Alegrete, who seems they want to say he was their son; and then, after nominating his children below, he says so: All of these were called themselves Moniz, after their father was put into honour.
; and says another information he was born in Alegrete, the one in Coruche or in Portalegre, son of a man who lived at the same village.
He was buried at his Chapel of Our Lady of Piety or of the Prant of the Carmo Convent, in Lisbon, in a Chapel that had been given to him by the Constable for his burial place, and there he nominates himself Escrivão da Puridade do Condestável.
He married Leonor Rodrigues[1][2] and had six children, three sons and three daughters: