When the Ordnance Survey documented the site in 1840, they found substantial ruins still standing in the southwest of the townland; the west wall remained intact alongside portions of the north and south walls, reaching an impressive height of 50 feet (15 metres). The walls themselves were remarkably thick at five and a half feet (1.6 metres), typical of defensive structures built to withstand siege warfare during Ireland’s turbulent medieval period.

The castle appears in historical records under various spellings, with antiquarian Thomas Johnson Westropp noting in the early 1900s that it was referenced as “Ardskeagh C[astle] in Kyllbyggeley” in Peyton’s historical writings. This variation in naming reflects the complex linguistic history of the region, where Irish place names were often anglicised differently by various record keepers over the centuries.

Today, no trace of Ardskeagh Castle remains visible above ground. The once formidable structure that dominated the local landscape for centuries has been completely levelled, leaving only historical records and archaeological surveys to tell its story. This complete disappearance isn’t uncommon for Irish castles; many were deliberately demolished during various political upheavals, whilst others were gradually quarried for building materials by local communities who saw the abandoned structures as convenient sources of dressed stone.