His father was Sgt. Major Juan de la Garza Falcon, and his mother was Maria Margarita Rodriguez de Montemayor.
He requested a dispensation to marry Juana Gutierrez. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, 2-7, p.24.
Maria Josefa Manuela de la Garza. In 1708, she requested a dispensation to marry Francisco Cantu.
Josepha de la Garza. She married Joseph Antonio de la Cerna y Alarcon, son of Joseph de la Cerna and Maria Botello.
Joseph Valentin de la Garza. In 1735, he requested a dispensation to marry Juana de Escamilla. In 1714, he requested a dispensation to marry Margarita Gonzalez. He married Beatriz de Elizondo, daughter of Pedro de Elizondo and Maria de la Garza.
Adriano de la Garza. He married Juana Gonzalez Hidalgo. He married Maria de Elizondo.
Joseph Ramon de la Garza. In 1726, he requested a dispensation to marry Josepha de Ochoa.
Joseph Salvador de la Garza. He married Francisca Guerra.
Josefa Gertrudis de la Garza. She married Matias de Laphitta y Berri.