[1] Warrenstown barony is in northeast County Offaly, west of the Boyne.

Warrenstown is roughly formed from the tuath Tuath Muighe Cloinne Cholgain, indicating a relationship to the Ó hAonghusa (O'Hennessy) and Ó hUallacháin (O'Houlihan).

The Crích na Cétach (O'Fallon) and the Clann Máel Chéin are noted people early to this area.

Tuath Muighe (aka Tuath dá Maige, or Tethmoy) was an ancient district which comprised the modern baronies of Warrenstown and the northern part of Coolestown.

This article related to the geography of County Offaly, Ireland is a stub.