Maria Antonia Saldaña was baptized on 7 Jan 1726 in Monterrey, a resident of San Pedro, the daughter of Jose Francisco Saldaña and Ana Josefa de Ayala. Her padrino was Dn Joseph de Hoyos?, and her madrina was Da Manuela de Caimusquis?.
She married Juan Diego Rodriguez de Montemayor on 12 Feb 1742 in Monterrey.