She was born circa 1776. Her father was Jose Juan Cuellar, and her mother was Ana Maria Gutierrez.
She married Juan Jose de la Garza, son of Francisco Angel de la Garza and Maria Cayetana Peña on 1 Feb 1796 in Mier. She was 20 years old, and the groom was 25 years old. His father owned Mier 14 grant.