Isca Dumnoniorum settlement there (modern Caerleon) to be distinguished as "Isca Augusta", while the Devonian Isca was called "Isca Dumnoniorum": Usk of the Dumnonians. Exeter began as settlements on a dry ridge ending in a spur overlooking a navigable river teeming with fish, with fertile land nearby. Although there have been no major prehistoric finds, these advantages suggest the site was occupied early. Coins had been discovered from the Hellenistic kingdoms, suggesting the existence of a settlement trading with the Mediterranean as early as . This is disputed however by Prof T P Wiseman who alleges the hoard was not genuine. Following
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