He was born circa 1775. His father was Juan Jose de la Garza Falcon, and his mother was Candida Francisca Guerra. His father owned Camargo 81 grant.
In 1782, he lived in Mier in household number 34. The church census recorded that he was a child, español, and 7 years old. His household included 9 people:
Juan Jose de la Garza Falcon, married, español, age 42.
Candida Francisca Guerra Cañamar, married, española, age 37.
Joseph Manuel de la Garza Falcon, a young child, español, age 14.
Blas Maria de la Garza Falcon, a child, español.
Francisco Antonio de la Garza Falcon, a child, español, age 9.
Jose Nepomuceno de la Garza Falcon, a child, español, age 7.
Juan Jose Manuel de la Garza Falcon, a youth, español, age 6.
Maria Candelaria Garza, an unmarried girl, india, age 15.
Maria Ygnacia Garza, a child, casta, age 1.
In 1791, he lived in Mier in household number 29. The church census recorded that he was a youth, español, and 16 years old. His household included 10 people:
Dn Juan Jose de la Garza Falcon, married, español, age 51.
Da Candida Francisca Guerra Cañamar, married, española, age 45.
Joseph Manuel de la Garza Falcon, single, español, age 23.
Blas Maria de la Garza Falcon, single, español, age 21.
Francisco Antonio de la Garza Falcon, a youth, español, age 18.
Jose Nepomuceno de la Garza Falcon, a youth, español, age 16.
Juan Jose Manuel de la Garza Falcon, a child, español, age 15.
Maria Rita de la Garza Falcon, a child, española, age 8.
Maria Candelaria Garza, single, india, age 24.
Jose Maria, single, indio, age 16.