She was born circa 1706. Her father was Nicolas Rodriguez de Montemayor, and her mother was Tomasina Ruiz de Ocon Salazar.
She requested a dispensation to marry Joaquin Cavazos. They were married on 28 Apr 1722 in Monterrey. She was 16 years old, and the groom was 26 years old. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.223.