Is bounded, North by Brecknock and Herefordshire, East by Gloucestershire, South by the Severn or Bristol Channel, and West by Glamorganshire and Brecknockshire. It is 33 miles long and 26 broad; and is divided into six Hundreds — Abergavenny, Caldicot, Ragland, Skenfreth, Uske, Wentlog. Rivers: the Wye, the Severn, the Uske, the Rummy, the Mimnow, and the Ebwy. This county has 7 Market Towns. It is in the Province of Canterbury, in the Dioceses of Llandaff, Hereford, and St David’s, and in the Oxford Circuit. Monmouthshire contains 498 square miles, or 318,720 acres. Population, 134,305.
Source: Leonard’s Gazetteer of England and Wales; Second Edition; C. W. Leonard, London; 1850.