Miguel de la Garza was the son of Francisco de la Garza and Maria Martinez.
He requested a dispensation to marry Manuela Flores in 1727. Dispensation source: Guerra et al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.247.
Maria Guadalupe de la Garza married Joseph Miguel de Escamilla.
Maria Catarina de la Garza married Cayetano Flaminco de Escamilla.