Isca Dumnoniorum of the legion at Exeter is supported by the discovery of a dolphin antefix (roof fitting) from levels within the military bathhouse dated to about 60. The antefix appears to have been created from the same mould as an example from the legionary fortress at Caerleon—where the legion is known to have been stationed from around 75. (The legion had previously suffered a defeat to the Silures of southern Wales in the year 52.) The legions of Britain were rearranged after Suetonius Paulinus's victory against the Boudiccan rebellion. There was a small subsidiary fort at Topsham. A supply depot along
England–Wales border Insular Celtic languages, and were regarded as Britons. The clear geographical divide between the mountainous western areas of southern Britain and the generally lower-lying areas to the east was reflected in the pattern of Roman occupation. The main Roman military bases for the control of what became Wales were beyond the mountains, at "Deva" (Chester), "Viroconium" (Wroxeter, near Shrewsbury), and "Isca Augusta" (Caerleon, near Newport), all located close to the later national border. When the Roman garrison left around 410, the various parts of Britain were left to govern and defend themselves. The western area, later Wales, had become largely