He was born circa 1781. His father was Pedro Regalado Guerra Cañamar, and his mother was Margarita Barrera.
In 1782, he lived in Mier in household number 37. The church census recorded that he was a young child, español, and 1 years old. His household included 4 people:
Pedro Regalado Guerra Cañamar, married, español, age 44.
Margarita Barrera, married, española, age 28.
Jose Anacleto Guerra Cañamar, a young child, español, age 1.
Juana Guerra Cañamar, a young child, española, age 1.