CoolestownCoolestown is a barony in County Offaly, Ireland.EtymologyCoolestown derives its name from Coolestown, a former name of Edenderry, from the Cooley/Cowley/Colley family who ruled it from 1560.LocationCoolestown is located in easternmost County Offaly. The Philipstown River flows through it.HistoryCoolestown was part of the ancient divisions known as Túath Dá Maige, and Ferran Uí Muircáin lying east of the Figile River. The Uí Muircáin were a sub-sept of Clan Colgan. The tuath of Mag Lége is also noted here with its association to the Uí Failge septs of the Uí Onchon and Uí Cellaig.List of settlementsBelow is a list of settlements in Coolestown:BracknaghClonbollogueEdenderry