Gwent

Gwent was a Welsh kingdom between the Wye and Usk, named after the Roman town of Venta Silurum, later Caerwent. Gruffydd ap Llywelyn conquered it in 1055; it regained independence after his death in 1063, but Norman invaders soon overran it. Its former lands became part of the Welsh Marches, where castles marked a frequently contested frontier.