She was born circa 1770. Her father was Vicente Longoria, and her mother was Manuela Francisca Garza. Her father owned Porción 93, Camargo. In 1782, she lived in San Nicolas/ Santa Rosalia de la Bonita in household number 141. The church census recorded that she was an unmarried girl, española, and 12 years old. Her household included 6 people.
She married Jose Antonio de Alanis, son of Jose [Salvador?] Alanis and Maria Guadalupe (Teresa) de la Garza on 1 Jul 1785 in Mier. She was 15 years old, and the groom was 25 years old.