Her father was Antonio Cavazos de la Garza, and her mother was Bernarda Rodriguez de Montemayor.
In 1696, she requested a dispensation to marry Gabriel de la Garza. The groom was 27 years old. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.162.
She married Pedro Macario Fernandez de Castro, son of Juan Fernandez de Castro and Agustina Uribe de la Cadena Lobo on 28 Sep 1712 in Monterrey. It was her second marriage.
Gabriel de la Garza. In 1748, he requested a dispensation to marry Javiera Fernandez.
Santiago de la Garza. In 1721, he requested a dispensation to marry Clara de Treviño.
Petronila Serena de la Garza. In 1721, she requested a dispensation to marry Joseph de Treviño.