He was born 23 Apr 1684 in Monterrey. His father was Sgt. Major Francisco de la Garza Falcon, and his mother was Leonor Sepulveda Renteria.
In 1707, he requested a dispensation to marry Francisca de Villarreal. They were married on 7 Jul 1707 in Monterrey. He was 23 years old, and the bride was 26 years old. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.199.
In 1751, he requested a dispensation to marry Ana Josefa de Peña. He was 67 years old. It was his second marriage. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.145.
Maria Antonia de la Garza Falcon. On 23 Jun 1730, she requested a dispensation to marry Bernabe Gutierrez de Lara . They were married on 9 Jan 1731 in Monterrey.
Maria Teresa de la Garza. In 1732, she requested a dispensation to marry Joseph Cavazos.
Maria Olaya de la Garza. In 1734, she requested a dispensation to marry Joseph Antonio Leal .
Maria Gertrudis de la Garza. She married Pedro Elizondo, son of Pedro de Elizondo and Maria de la Garza.