She was born circa 1763. Her father was Ramon Guerra, and her mother was Rosalia Hinojosa. Her father owned Porción 6, Mier. 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 19 years old. Her household included 8 people.
She married Jose Lopez de Jaen, son of Luis Lopez de Jaen and Juana Maria Villarreal on 1 May 1782 in Mier. She was 19 years old.