His father was Salvador de la Garza, and his mother was Juana Gutierrez de Castro.
He married Beatriz de Elizondo, daughter of Pedro de Elizondo and Maria de la Garza.
In 1735, he requested a dispensation to marry Juana de Escamilla. It was his second marriage. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.94.
In 1714, he requested a dispensation to marry Margarita Gonzalez. It was his third marriage. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.56.
Joseph Cayetano de la Garza. In 1746, he requested a dispensation to marry Ana Josefa de la Garza.
Juana Maria de la Garza. In 1748, she requested a dispensation to marry Joseph Cristobal de la Garza.
Joseph Joaquin de la Garza. In 1747, he requested a dispensation to marry Josepha Gertrudis Cantu.