His father was Capt. Francisco de la Garza Falcon, and his mother was Juana Garcia Gutierrez.
In 1684, he requested a dispensation to marry Gertrudis Ochoa de Elejalde. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.50.
In 1728, he requested a dispensation to marry Maria de la Garza. It was his second marriage, and her second marriage. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.77.
He married Francisca de Montemayor. It was his third marriage.
Miguel de la Garza. In 1719, he requested a dispensation to marry Leonarda Gonzalez Hidalgo, daughter of Juan Gonzalez Hidalgo and Maria Cantu.
Agustin de la Garza. In 1711, he requested a dispensation to marry Maria Josefa de la Garza, daughter of Teodoro de la Garza and Maria Gonzalez de Quintanilla.
Maria de la Garza. In 1707, she requested a dispensation to marry Jose Felix de Almandos, son of Juan de Almandos and Isabel de Maya y Treviño.
Josefa de la Garza. In 1707, she requested a dispensation to marry Clemente de la Garza Falcon, son of Sgt. Major Francisco de la Garza Falcon and Leonor Sepulveda Renteria. They were married on 6 Jul 1707 in Monterrey. She died on 13 May 1714 in Monterrey.
Francisco Javier de la Garza. In 1727, he requested a dispensation to marry Rosa Maria Gonzalez, daughter of Juan Gonzalez Hidalgo and Maria Cantu.
Ana Maria de la Garza. She married Cristobal Joseph Gonzalez, son of Cristobal Gonzalez and Dorotea Rodriguez de Montemayor.
Juana de la Garza. She married Nicolas Lozano.
Micaela de la Garza. In 1723, she requested a dispensation to marry Joseph Gonzalez, son of Juan Gonzalez Hidalgo and Maria Cantu.
Alejo de la Garza. In 1689, he requested a dispensation to marry Teresa de Charles, daughter of Cristoval de Charles and Maria de Mendoza.
Maria de la Garza. In 1685, she requested a dispensation to marry Juan de Leon, son of Antonia de la Peña.