His father was Francisco de la Garza, and his mother was Gertrudis de Ochoa.
In 1719, he requested a dispensation to marry Leonarda Gonzalez Hidalgo. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.286.
Maria de la Garza. In 1748, she requested a dispensation to marry Eugenio Gomez de Castro.
Marcos de la Garza. In 1749, he requested a dispensation to marry Maria Lucia de Oria.