Enniscorthy (Irish: Inis Córthaidh) is the second largest town in County Wexford, Ireland. The population of the town and environs is 9538. The Placenames Database of Ireland sheds no light on the origins of the town's name. It may refer either to the "Island of Corthaidh" or the "Island of Rocks". With a history going back to 465 Enniscorthy is one of the longest continuously-occupied sites in Ireland. The cathedral of the Roman Catholic Diocese of Ferns is sited in the town.