She was born circa 1763. Her father was Luis Lopez de Jaen, and her mother was Juana Maria Villarreal. Her father owned Mier 3 grant.
In 1782, she lived in Santa Gertrudis / San Jose de la Rinconada in household number 84. The church census recorded that she was an unmarried girl, española, and 19 years old. Her household included 6 people:
Luis Lopez de Jaen, married, español, age 51.
Juana Maria Villarreal, married, española, age 45.
Toribio Lopez de Jaen, single, español, age 25.
Jose Miguel Lopez de Jaen, single, español, age 22.
Maria Guadalupe Lopez de Jaen, an unmarried girl, española, age 19.
Jose Maria Lopez de Jaen, a child, español, age 10.