Built as an O’Carroll tower house, likely in the 16th century, this medieval fortress served as a stronghold for one of Ireland’s prominent Gaelic families. The Books of Survey and Distribution record that Lewis Carroll owned the lands of Glenacurragh and nearby Gragaluge in 1641, comprising 215 acres of profitable land. Following the Irish Rebellion of 1641 and the subsequent wars, these lands were confiscated and granted to John Holland in the latter half of the 17th century.

The castle remained a notable landmark for centuries; Sir Charles Coote noted in 1801 that it was inhabited by a Mr. Palmer. A photograph from around 1954 reveals fascinating architectural details of what was possibly a four storey building with an attic. The east face featured a dressed stone pointed doorway with an external rebate for a yett, an iron grille that protected the inner wooden door, similar to the entrance at nearby Castlearmstrong. Above this doorway sat a square headed window with chamfered jambstones, and higher still, a 17th century twin light mullioned window with hood moulding and stepped terminals, remarkably similar to those at Ballycowan Castle. The staggered arrangement of slit openings at the southern end suggested a spiral staircase occupied the southeast corner of the tower.

Sadly, this piece of medieval Irish heritage was demolished in the late 1960s, leaving no visible remains today. The tower house had been incorporated into a 19th century country house, connected via a short extension to the southern wall of the medieval structure. The Ordnance Survey map of 1908 clearly shows the tower house attached to the northeast corner of the country house, amongst the farm outbuildings. Though the castle itself is gone, its memory persists through historical records and photographs, offering glimpses into the fortified dwellings that once dotted the Irish landscape during centuries of territorial conflict and changing ownership.