She was born circa 1777, and was baptized 24 May 1777. Her father was Ignacio Barrera, and her mother was Manuela Flores. In 1782, she lived in Mier in household number 58. The church census recorded that she was a child, española, and 5 years old. Her household included 6 people. In 1791, she lived in Mier in household number 85. The church census recorded that she was an unmarried girl, española, and 13 years old. Her household included 10 people.

Marriage