Jose Cosme Rodriguez was born circa 1776, the son of Geronimo Rodriguez and Maria Isabel Saldivar.
In 1782, he lived at Miguel Perez. The church census recorded that he was a young child, español, and 6 years old. His household included 8 people:
Geronimo Rodriguez, español, married, age 59.
Maria Isabel Saldivar, española, married, age 44.
Jose Antonio Rodriguez, español, single, age 22.
Jose Francisco Rodriguez, español, single, age 20.
Maria Guadalupe Rodriguez, española, an unmarried girl, age 17.
Jose Gregorio Rodriguez, español, a youth, age 15.
Jose Panfilo Rodriguez, español, a child, age 12.
Jose Cosme Rodriguez, español, a young child, age 6.