He was born circa 1761. His father was Francisco Guerra, and his mother was Ana Josefa de la Garza. His father owned Mier 66 grant.
He married Maria Guadalupe Barrera, daughter of Santiago Barrera and Maria Salome Garcia on 27 May 1784 in Mier. He was 23 years old, and the bride was 20 years old. Their padrino was Jose Bernardo Peña, and their madrina was Maria Balvina Garcia. Her father owned Mier 2 grant.
Juan Jose Guerra, baptized 7 Feb 1785 in Mier. He married Maria Juana Hinojosa, daughter of Marcelo Hinojosa and Rita Garcia on 12 Aug 1816. He owned El Tule (tract).
In 1782, he lived in Mier in household number 36. The church census recorded that he was single, español, and 21 years old. His household included 8 people:
Don Francisco Antonio Guerra Cañamar, married, español, age 72.
Doña Ana Josefa de la Garza, married, española, age 60.
Maria Leonor Guerra Cañamar, an unmarried girl, española, age 42.
Jose Tomas Guerra Cañamar, single, español, age 25.
Maria de los Santos Guerra Cañamar, an unmarried girl, española, age 22.
Jose Silverio Guerra Cañamar, single, español, age 21.
Lucia Guerra, an unmarried girl, casta, age 20.
Julian Guerra, a youth, casta, age 14.
In 1791, he lived in Mier in household number 30. The church census recorded that he was a widower, español, and 30 years old. His household included 6 people:
Da Ana Josefa de la Garza, a widow, española, age 69.
Maria Leonor Guerra Cañamar, an unmarried girl, española, age 51.
Jose Tomas Guerra Cañamar, single, español, age 33.
Maria Tomasa Guerra, a child, española, age 8.
Jose Silverio Guerra Cañamar, a widower, español, age 30.
Juan Jose Guerra, a young child, español, age 6.