Monmouthshire is an English county, bordering on South Wales, and is bounded to the north and north-east bv Herefordshire, the river Monnow forming a portion of the boundary, on the east by the Wye, dividing it from Herefordshire and Gloucestershire, on the south by the estuary of the Serern, and on the west by the Rumney, dividing it from Brecknockshire and Glamorganshire.
