She was born circa 1754. Her father was Santiago Barrera, and her mother was Maria Salome Garcia. Her father owned Mier 2 grant.
She married Pedro Regalado Guerra Cañamar, son of Francisco Guerra and Ana Josefa de la Garza on 24 Dec 1772 in Mier. She was 18 years old, and the groom was 33 years old. His father owned Mier 66 grant.
Jose Anacleto Guerra Cañamar, born 1781.
Juana Guerra Cañamar, born 1781.
In 1782, she lived in Mier in household number 37. The church census recorded that she was married, española, and 28 years old. Her household included 4 people:
Pedro Regalado Guerra Cañamar, married, español, age 44.
Margarita Barrera, married, española, age 28.
Jose Anacleto Guerra Cañamar, a young child, español, age 1.
Juana Guerra Cañamar, a young child, española, age 1.