The Ordnance Survey Field Name Books from 1837 to 1840 describe these ruins as a ‘Turret consisting of a stump of a circular tower, remains of some walls’, offering a tantalising glimpse of what once stood here. These fragments are believed to be part of a defensive bawn wall and a surviving cylindrical angle tower that belonged to O’Dempsey’s castle, a structure that would have commanded respect and authority in its heyday.

The O’Dempseys were an important Gaelic family who held sway over this part of Ireland for centuries, and their castle would have served as both a residence and a defensive stronghold. The bawn, essentially a fortified courtyard wall, was a common feature of Irish castles and tower houses from the medieval period through to the 17th century. These walls, often punctuated by defensive towers at the corners, provided protection for livestock, supplies, and people during times of conflict; a necessity in an era when cattle raids and territorial disputes were commonplace.

Today, visitors to the site can still trace the footprint of this once formidable structure, though time and weather have reduced it to atmospheric ruins. The surviving cylindrical tower fragment stands as a testament to the skilled craftsmanship of medieval builders, whilst the wall remnants help visitors imagine the scale and layout of the original fortification. These archaeological remains, documented in the Archaeological Inventory of County Offaly published in 1997, continue to be studied and reinterpreted as our understanding of Ireland’s castle architecture evolves.