His father was Sgt. Major Juan de la Garza Falcon, and his mother was Maria Margarita Rodriguez de Montemayor.
In 1679, he requested a dispensation to marry Nicolasa de la Garza de la Rocha. the bride was 31 years old. It was her second marriage.
In 1714, he requested a dispensation to marry Micaela Sanchez de la Barrera. It was his second marriage. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.55.
Gertrudis de la Garza. She married Joseph Cantu, son of Fernando Cantu and Antonia Ortiz.
Juan Joseph de la Garza. In 1730, he requested a dispensation to marry Maria Antonia de la Garza. He married Ana Guerra. In 1722, he requested a dispensation to marry Maria Gonzalez Hidalgo.
Carlos de la Garza. In 1707, he requested a dispensation to marry Luisa de Treviño.
Joseph de la Garza. In 1724, he requested a dispensation to marry Ana Guerra.
Maria de la Garza. In 1714, she requested a dispensation to marry Cristobal de Treviño.
Josepha de la Garza. In 1714, she requested a dispensation to marry Juan Nicolas Rodriguez.
Margarita de la Garza. In 1697, she requested a dispensation to marry Lucas de Treviño.