Caerwent a centre for the Kingdom of Gwent after the Roman occupation. The name Caerwent translates from Welsh as "fort of Gwent", and the name Gwent derives from the Roman name "Venta (Silurum)". The English town name of Winchester has a parallel derivation, ultimately from the combination of the Latin words "Venta", in that case, "Venta Belgarum", and "castra". Caerwent remained an important centre, where the road between Gloucester and Caerleon met the north-south road from Shrewsbury, via Monmouth and Trellech, to the sea at Portskewett. Excavations at Caerwent have revealed remains and everyday objects from the post-Roman period. Metalwork, including
England–Wales border Silures, traditionally the area between the rivers Usk, Wye and the Severn estuary. It was centred at different times on "Venta" (Caerwent), from which it derived its name, and "Isca Augusta" (Caerleon). Gwent generally allied with, and at various times was joined with, the smaller Welsh kingdom of Ergyng, centred in present-day southern Herefordshire west of the Wye (and deriving its name from the Roman town of "Ariconium"); and the larger kingdom of Glywysing in modern Glamorgan. The name Glywysing may indicate that it was founded by a British native of "Glevum" (Gloucester). The Battle of Mons Badonicus, circa 500,