She was born circa 1726, and was baptized 7 Jan 1726 in Monterrey. Her father was Jose Francisco Saldaña, and her mother was Ana Josefa de Ayala. At the baptism, the priest recorded her residence as San Pedro. 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. She was 16 years old.