María was the daughter of Gonzalo Nuñez Salvadores but her mother is unknown. The date and place of her birth have not been found.
Her husband was Íñigo López de Mendoza. They were married, but the date and place have not been found. Their three known children were Iñes Iñiguez (?-?), Lope Íñiguez (?-?) and Sancho Íñiguez (?-?).