She was born circa 1715. Her father was Joseph Martinez, and her mother was Maria de la Garza Flores de Valdez.
In 1733, she requested a dispensation to marry Onofre de Alderete y Guerrero in Monclova. They were married on 1 Feb 1734 in Monclova. She was 19 years old, and the groom was 24 years old. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.261link; marriage source: link. Her husband died on 11 Nov 1754 in San Fernando de Bexar. He was 44 years old.