Firceall

[1] Firceall itself comprised the ancient baronies of Ballycowan, Ballyboy and Eglish, which are located in modern day mid County Offaly extending from Durrow north of Tullamore to Eglish on the edge of Birr in an area which is some 25 miles in length by 5 miles in width.

[2] The name Firceall comes from the Irish words Fir Ceala meaning Men of the Churches.

Firceall formed land boundaries with a number of major ancient Irish Gaelic Kingdoms.

A land boundary was formed with Éile (Ely) of the Kingdom of Munster just east of Birr.

Near Tullamore, another land boundary with Uí Failghe (anglicised as Offaly) of the Kingdom of Leinster was formed.