Joseph Perez de Leon was born circa 1705, the son of Miguel Perez de Leon and Beatriz Rodriguez de Montemayor.
He requested a dispensation to marry Clara Maria de la Garza in 1729 in Monterrey. They were married on 26 Apr 1729 in Monterrey. Dispensation source: Guerra et al., Index to the Marriage Investigations of the Diocese of Guadalajara, 57-15.