Maria Gertrudis Lopez was born circa 1779, the daughter of Jose Cayetano Lopez and Maria Antonia Gonzalez.
She married Jose Julian Olivares on 8 Feb 1797.
In 1782, she lived at El Cojo. The church census recorded that she was a young child, española, and 3 years old. Her household included 6 people:
Jose Cayetano Lopez de Jaen, español, married, age 34.
Maria Antonia Gonzalez, española, married, age 26.
Juana Maria Lopez, española, a young child, age 4.
Maria Gertrudis Lopez, española, a young child, age 3.
Jose Rafael Lopez, español, a young child, age 2.
Juan Antonio Santos, español, a youth, age 15.