Warrenstown is roughly formed from the tuathTuath Muighe Cloinne Cholgain, indicating a relationship to the Ó hAonghusa and Ó hUallacháin. The Crích na Cétach and the Clann Máel Chéin are noted people early to this area. Tuath Muighe was an ancient district which comprised the modern baronies of Warrenstown and the northern part of Coolestown. The Berminghams were early Anglo-Norman grantees of Tethmoy.