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
Isca sullo Ionio for the new community, would be called Isca Marina. Nine centuries earlier, the area now known as Isca Marina, was the original town location for the ancestors of Isca, until invasions of outsiders, forced the towns people, to higher ground. Now many hundreds of descendants of the original town location have come home. While some homes were built in the late 1940s in the marina, it was not until the early 1950s that roads, sidewalks, and the town square were built. A water supply was established in 1951. Electricity reached the town in 1953. The elementary school was completed for