He was born circa 1789. His father was Jose Tomas Garcia, and his mother was Maria Josefa de la Garza.
In 1791, he lived in Mier in household number 20. The church census recorded that he was a young child, español, and 2 years old. His household included 5 people:
Jose Tomas Garcia, married, español, age 23.
Maria Josefa de la Garza, married, española, age 28.
Juan Jose Garcia, a young child, español, age 2.
Maria Gertrudis Garcia, a young child, española, age 1.
Antonio Garcia, a young child, español.