She was born circa 1778. Her father was Jose Matias Ramirez Peña, and her mother was Maria Juliana Gonzalez. Her father owned Palo Blanco grant, Brooks County.
She married Jose Manuel de la Garza Falcon, son of Juan Jose de la Garza Falcon and Candida Francisca Guerra on 26 May 1800. She was 22 years old, and the groom was 24 years old. He owned San Francisco (tract). His father owned Camargo 81 grant.
In 1782, she lived in Mier in household number 68. The church census recorded that she was a young child, española, and 4 years old. Her household included 4 people:
Jose Matias Ramirez Peña, married, español, age 26.
Maria Juliana Gonzalez, married, española, age 19.
Maria Antonia Ramirez, a young child, española, age 7.
Maria Ursula Ramirez, a young child, española, age 4.