Fozzy:
I think Heywood has it. Ballyboy.
BALLYBOY, a parish, in the barony of BALLYBOY, KING's county, and province of LEINSTER, comprising the market and post-town of Frankford, and containing 4182 inhabitants. This parish is situated on the road from Tullamore to Parsonstown, adjacent to the Silver river, and comprises 8861 statute acres, as applotted
Here is a good site for Offaly. http://www.offalyhistory.com/index.html
Good luck,
Pat