She was born circa 1748. Her father was Juan Vela, and her mother was Felipa Rodriguez.
In 1750, she lived in Camargo. The census recorded that she was the daughter of a settler, española, and 2 years old. Her household had 5 people, including one servant, and they received government aid to move to the colony:
Juan Vela, head of household, español
Felipa Rodriguez, wife, española
Jose Vela, son, español, 12 years old
Gertrudis Vela, daughter, española, 2 years old