Jose Antonio Ventura was born circa 1772, the son of Matias Ventura (Alvarez) and Maria Zapopa Gonzalez.
In 1782, he lived at Santa Gertrudis. The church census recorded that he was a child, casta, and 10 years old. His household included 7 people:
Mathias Ventura (Alvarez), casta, married.
Maria Zapopa Gonzalez, espaƱola, married.
Jose Rafael Ventura casta.
Jose Antonio Ventura, casta, a child, age 10.
Jose Maria Ventura, casta, a child, age 8.
Pedro Ventura, casta, a young child, age 6.
Maria Concepcion Ventura, india, a young child, age 1.