He was born circa 1768, and was baptized 10 Feb 1768 in Mier. His father was Ramon Guerra, and his mother was Rosalia Hinojosa. His father owned land in Porción 6, Mier. His padrino was Jose Gaspar Garcia, and his madrina was Maria Gertrudis Barrera. In 1782, he lived in San Lorenzo de las Minas in household number 76. The church census recorded that he was a child, español, and 15 years old. His household included 8 people.
He married Maria Rita Sandoval, daughter of Manuel Sandoval and Maria Petra Garcia on 22 Nov 1791. He was 23 years old, and the bride was 29 years old. Her father owned land in Porción 16, Mier.