She was born circa 1754. Her father was Salvador Alanis, and her mother was Maria (Guadalupe Teresa) de la Garza.
She married Jose Antonio Garcia, son of Jose Cristobal Garcia and Petra Cantu on 25 Nov 1774 in Mier. She was 20 years old.
Antonio Garcia, born in Cerralvo. He married Andrea Lopez, daughter of Antonio Lopez and Francisca Javiera de la Garza on 30 Jun 1807 in Mier. He married Ygnacia Perez, daughter of Jose de los Reyes Perez de Leon and Josefa Caballero.