Isca Dumnoniorum but seems to have gone into decline prior to the Roman withdrawal from Britain . The name "Isca Dumnoniorum" is a Latinization of a native Brittonic name describing flowing water, in reference to the River Exe. More exactly, the name seems to have originally meant "full of fish" (cf. Welsh "pysg", "fish"), although it came to be a simple synonym for water (cf. Scottish whiskey). This is also reflected in the modern Welsh name for Exeter: "Caerwysg" meaning "fortified settlement on the river Uisc". The same name was used for the River Usk (modern ) in southern Wales, causing the
Moridunum (Axminster) century and occupation continued until the end of the 4th. Moridunum (Axminster) Moridunum was a fort and small town in the Roman province of Britannia. Its remains are located at Woodbury Farm, immediately south of Axminster in the English county of Devon. The square fort was built at the intersection of two Roman roads, the Fosse Way and Durnovaria-Isca Dumnoniorum road, apparently in the 2nd century. Its ditch survives around much of the site. A civilian settlement soon grew up nearby, encouraged by the building of what has been interpreted as a large stone mansio for the provincial postal service.