Cornovii (Cornwall) Dumnoniorum (present day Exeter), it is likely that he only listed Roman places, not purely native sites. Of these, there has been speculation that Voliba might be a place in Cornwall and Tamara is assumed to be on the River Tamar, the border between Cornwall and Devon. Ptolemy's list is supplemented by the problematical Ravenna Cosmography, which lists sixteen names before Isca Dumnoniorum (which is listed as "scadum namorum", showing some of the problems of this source) and which have therefore been assumed to be west of Exeter. Several have been identified as most likely in Devon, leaving "purocoronavis" (the
Southern England have a distinct identity from the rest of England, however without universal agreement on what cultural, political, and economic characteristics of the South are. For statistical purposes, Southern England is divided into four regions: South West England, South East England, London, and the East of England. Combined, these have a total area of , and a population of 28 million. People often apply the terms "southern" and "south" loosely, without deeper consideration of the geographical identities of Southern England. This can cause confusion over the depth of affiliation between its areas. As in much of the rest of England, people