Offaly

Offaly, or Uí Failghe, was a Gaelic kingdom in the Irish midlands. Its O'Conor Faly rulers moved their seat from Rathangan to Daingean after the Norman invasion.

The kingdom survived into the sixteenth century, but its last de facto king, Brian mac Chathaoir, died about 1556. The Irish Parliament then passed the Settlement of Laois and Offaly Act, and Tudor plantation divided Uí Failghe among King's County, Queen's County and County Kildare.