She was born circa 1790. Her father was Jose Tomas Garcia, and her mother was Maria Josefa de la Garza.
In 1791, she lived in Mier in household number 20. The church census recorded that she was a young child, española, and 1 years old. Her household included 5 people:
Jose Tomas Garcia, married, español, age 23.
Maria Josefa de la Garza, married, española, age 28.
Juan Jose Garcia, a young child, español, age 2.
Maria Gertrudis Garcia, a young child, española, age 1.
Antonio Garcia, a young child, español.