Sudbrook, Monmouthshire the Silures from the 2nd century BC and occupied by the Romans from the 1st century AD until the 4th century. The hillfort was originally much bigger than now having been eroded over the centuries. Finds of Roman coins at Black Rock, Portskewett, show that the ferry crossing was in use in Roman times, on the route between the Roman stations of "Aquae Sulis" (Bath) and "Venta Silurum" (Caerwent). According to tradition, Caradog Freichfras, the Welsh ruler of Gwent in the 5th century or 6th century AD, moved his court from Caerwent to the Portskewett area, possibly to the fort.
Aquae Sulis ("deiada" "goddess"); "Andagin" - accusative feminine "woman"; "Cuamenai" - locative/dative feminine of "Cuamena" It was the religious settlement, rather than the road junction further north, which was given defensive stone walls, probably in the 3rd century. The area within - of approximately - was largely open ground, but soon began to be filled in. There is some dispute as to whether these new buildings were private dwellings or were associated with servicing the pilgrims to the temple. There was also a ribbon development along the northern road outside the walls and cemeteries beyond. From the later 3rd century on, the