His father was Lazaro de la Garza Falcon, and his mother was Petronila de Montemayor.
In 1685, he requested a dispensation to marry Clara de Renteria. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.49.
Margarita de la Garza (Montemayor). In 1733, she requested a dispensation to marry Juan Caballero de los Olivos, son of Sgt. Maj. Lucas Caballero de los Olivos and Margarita Rodriguez de Montemayor. In 1702, she requested a dispensation to marry Miguel de Ochoa.
Maria de la Garza. In 1728, she requested a dispensation to marry Francisco de la Garza, son of Capt. Francisco de la Garza Falcon and Juana Garcia Gutierrez. She married Francisco Rosillo.