He was born circa 1779. His father was Jose Nicolas Garcia, and his mother was Maria Ana Flores.
He married Gertrudis Peña, daughter of Santiago Peña and Javiera Gonzalez on 25 Aug 1806. He was 27 years old, and the bride was 18 years old. Her father owned Palo Blanco grant, Brooks County.
In 1782, he lived in Mier in household number 18. The church census recorded that he was a young child, español, and 3 years old. His household included 4 people:
Jose Nicolas Garcia, married, español, age 24.
Maria Ana Flores, married, española, age 23.
Maria Rosalia Garcia, a young child, española, age 3.
Jose Manuel Garcia, a young child, español, age 3.
In 1791, he lived in Mier in household number 19. The church census recorded that he was a child, español, and 9 years old. His household included 4 people:
Jose Nicolas Garcia, a widower, español, age 33.
Maria Rosalia Garcia, a child, española, age 10.
Jose Manuel Garcia, a child, español, age 9.
Jose Antonio Garcia, a child, español, age 4.