She was born circa 1779. Her father was Jose Maria Garcia Salinas, and her mother was Maria Lucia Izaguirre.
In 1782, she lived in El Paso de Los Arrieros in household number 99. The church census recorded that she was a young child, española, and 3 years old. Her household included 3 people:
Jose Maria Garcia, married, español, age 26.
Maria Lucia Izaguirre, married, española, age 21.
Maria Gertrudis Garcia, a young child, española, age 3.