He was born circa 1761. His father was Juan Jose Garcia, and his mother was Maria Josefa Salinas. His father owned Mier 28 grant.
In 1782, he lived in Mier in household number 40. The church census recorded that he was single, español, and 21 years old. His household included 9 people:
Juan Jose Garcia, married, español, age 53.
Maria Ana Josefa Salinas, married, española, age 46.
Jose Tomas Garcia, single, español, age 23.
Pedro Jose Garcia, single, español, age 21.
Jose Maria Garcia, a youth, español, age 19.
Jose Rafael Garcia, a child, español, age 10.
Jose Antonio Garcia, a young child, español, age 9.
Maria Guadalupe Garcia, single, india, age 20.
Maria Estefania Garcia, a young child, india, age 4.