She was born circa 1764. Her father was Ramon Guerra, and her mother was Rosalia Hinojosa. Her father owned Mier 6 grant.
She married Jose Antonio Peña Maldonado, son of Jose Antonio Peña and Ana Gertrudis Maldonado on 14 Oct 1790. She was 26 years old, and the groom was 20 years old.
In 1782, she lived in San Lorenzo de las Minas in household number 76. The church census recorded that she was an unmarried girl, española, and 18 years old. Her household included 8 people:
Don Jose Ramon Guerra Cañamar, a widower, español, age 65.
Jose Antonio Guerra Cañamar, single, español, age 29.
Jose Alejandro Guerra Cañamar, single, español, age 22.
Maria Ignacia Guerra Cañamar, an unmarried girl, española, age 19.
Maria Juana Francisca Guerra Cañamar, an unmarried girl, española, age 18.
Maria Graciela Guerra Cañamar, an unmarried girl, española, age 16.
Vicente Guerra Cañamar, a child, español, age 15.
Jose Ignacio Guerra Cañamar, a child, español, age 11.