His father was Pedro de la Garza Rodriguez, and his mother was Maria Lucia Robles y de la Rocha.
In 1686, he requested a dispensation to marry Maria Cantu. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.49.
Isabel Perez de la Garza. She married Gabriel Cavazos, son of Joseph Cavazos and Jacinta de la Cerda (Fernandez de Castro).
Francisco Javier Perez de la Garza. In 1730, he requested a dispensation to marry Maria Guadalupe de la Garza.
Maria Gertrudis Perez de la Garza. In 1728, she requested a dispensation to marry Antonio de la Garza.
Juana Maria de la Garza. In 1724, she requested a dispensation to marry Lucas de la Garza.
Joseph Francisco de la Garza Perez. In 1730, he requested a dispensation to marry Clara Guerra.
Maria Catarina de la Garza. In 1710, she requested a dispensation to marry Francisco de Villarreal.
Tomasina de la Garza. In 1710, she requested a dispensation to marry Andres de Villarreal.