Clonbeg Castle belonged to the O’Carroll family, one of the prominent Gaelic clans who controlled much of this region during medieval times. The castle appears to have vanished completely from the landscape, leaving no visible trace above ground for visitors to explore today.

Historical maps tell us more about what once stood here. The first edition Ordnance Survey six-inch map from the 19th century shows the castle as a modest rectangular structure, oriented northeast to southwest. It featured a small projecting tower on its northeastern wall, positioned near the northern corner of the building. The entire castle sat within the western section of what appears to have been a circular earthen bawn; a defensive enclosure typical of Irish tower houses and castles. This protective earthwork would have provided an additional layer of security for the O’Carroll stronghold, and the site was surrounded by a grove of trees at the time of the survey.

The complete disappearance of Clonbeg Castle serves as a reminder of how many of Ireland’s medieval structures have been lost to time and agricultural development. While grander castles elsewhere have been preserved or restored, smaller fortifications like this one often fell into ruin and were eventually cleared away as farming practices modernised. The O’Carrolls, who once wielded considerable power across the Irish midlands, would likely be surprised to find their fortress replaced by the practical necessities of contemporary farming life.