County Offaly (Irish: Contae Uíbh Fhailí) is a county in Leinster, Ireland, bordered by seven other counties: Galway, Roscommon, Westmeath, Meath, Kildare, Laois, and Tipperary. Originally the name referred to the Kingdom of Uí Failghe. The present county was shired in 1556 by Mary I of England during one of the Plantations of Ireland, and was then named King's County after King Philip II of Spain, and the county town was Philipstown (now called Daingean) until the nineteenth century. The county town is now Tullamore.

source: Wikipedia County Offaly