Jose Guillermo Hinojosa was born on 10 Feb 1768 in Mier, the son of Pedro Regalado Hinojosa and Maria Catalina Peña. His padrino was Jose Leonardo Chapa, and his madrina was Luisa Chapa (sister).
He married Maria Manuela Peña.
In 1782, he lived in Mier. The church census recorded that he was a youth, español, and 15 years old. His household included 7 people:
Francisco Ramos, español, married, age 33.
Maria Gertrudis Hinojosa, española, married, age 26.
Manuel Ramos, español, a child, age 9.
Jose Cayetano Ramos, español, a child, age 7.
Maria Petra Ramos, española, a young child, age 5.
Pedro Regalado Hinojosa, español, a widower, age 58.
Jose Guillermo Hinojosa, español, a youth, age 15.