Diego de la Garza was the son of Capt. Francisco de la Garza Falcon.
He married Maria de Lerma on 17 Feb 1676 in Monterrey.
He requested a dispensation to marry Juana de la Garza Gumendio in 1684. Dispensation source: Guerra et al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.165.