He was born circa 1770, and was baptized 25 Jan 1770. His father was Ramon Guerra, and his mother was Rosalia Hinojosa. His father owned Mier 6 grant.
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 11 years old. His household included 8 people:
Don Jose Ramon Guerra Cañamar, a widower, español, age 65.
Jose Antonio Guerra Cañamar, single, español, age 29.
Jose Alejandro Guerra Cañamar, single, español, age 22.
Maria Ignacia Guerra Cañamar, an unmarried girl, española, age 19.
Maria Juana Francisca Guerra Cañamar, an unmarried girl, española, age 18.
Maria Graciela Guerra Cañamar, an unmarried girl, española, age 16.
Vicente Guerra Cañamar, a child, español, age 15.
Jose Ignacio Guerra Cañamar, a child, español, age 11.