He was born circa 1776. His father was Juan Manuel Guerra Cañamar, and his mother was Maria Isabel Treviño.
He married Maria Juana Chapa, daughter of Jose Joaquin Chapa and Maria Tomasa Benavides on 28 Feb 1795 in Mier. He was 19 years old, and the bride was 18 years old.
In 1782, he lived in Mier in household number 35. The church census recorded that he was a young child, español, and 6 years old. His household included 6 people:
Juan Manuel Guerra Cañamar, married, español, age 40.
Isabel Maria Treviño, married, española, age 26.
Jose Francisco Guerra Cañamar, a young child, español, age 6.
Antonio Matias Guerra Cañamar, a young child, español, age 5.
Maria Tomasa Guerra Cañamar, a young child, española, age 2.
Jose Ysidoro Guerra Cañamar, a young child, español, age 1.
In 1791, he lived in Mier in household number 31. The church census recorded that he was single, español, and 14 years old. His household included 12 people:
Dn Juan Manuel Guerra Cañamar, married, español, age 49.
Da Isabel Maria Treviño, married, española, age 39.
Jose Francisco Guerra Cañamar, single, español, age 14.
Antonio Matias Guerra Cañamar, a child, español, age 13.
Maria Tomasa Guerra Cañamar, a child, española, age 11.
Jose Ysidoro Guerra Cañamar, a child, español, age 10.
Maria Segunda Guerra Cañamar, a child, española, age 8.
Jose Antonio Guerra Cañamar, a child, español, age 6.
Jose Mateo Guerra Cañamar, a child, español, age 5.
Maria Encarnacion Guerra Cañamar, a young child, española, age 3.
Juan Jose Guerra Cañamar, a young child, español, age 1.
Antonia Rita Guerra, a child, india, age 10.