She was born circa 1751. Her father was Santiago Garcia, and her mother was Aparicia Rodriguez.
In 1782, she lived in Miguel Perez in household number 144. The church census recorded that she was married, española, and 31 years old. Her household included 6 people:
Jose [Felix] Lopez, married, español, age 57.
Maria Nicolasa Garcia, married, española, age 31.
Maria Narcisa Lopez, an unmarried girl, española, age 17.
Jose Felipe Lopez, a youth, español.
Jose Ygnacio Lopez, a child, español.
Maria Francisca Lopez, a young child, española.