This substantial medieval estate, encompassing the parishes of Inch, Clongeen and Ballylannan, passed through the hands of several notable Anglo-Norman families following the invasion of Ireland. Maurice de London held it in 1247, but by 1324 it had transferred through marriage to George le Poer, who fell from grace when he was attainted in 1346. The Neville family then acquired the estate through another marriage connection in 1385, likely building the tower house that still stands today during their 15th-century tenure. Their ownership ended dramatically in 1538 when David Neville was attainted, leading to a succession of new owners including the Synnott family, who maintained the castle in good repair through the turbulent 1640s.

The castle itself is a rectangular tower house measuring approximately 12.7 metres north to south and 8.5 metres east to west, positioned on an east-facing slope about 80 metres from the meandering Corock River. Though significantly altered during the 19th century with the addition of pointed Gothic Revival windows and doorways, the structure retains several original medieval features including a projecting garderobe tower on the western wall’s northern end. The ground floor, accessed through a pointed doorway on the eastern wall, connects to a stairway built into the northern wall that rises to the upper floors. Original defensive embrasures have been modified into larger windows, whilst the interior preserves a few authentic elements such as a cupboard built into the southern wall and the garderobe facilities in the projecting tower.

The castle underwent extensive Victorian modifications that dramatically changed its appearance, including the addition of modern crenellations, rectangular corner turrets, and a remarkable four-storey tower built atop the original garderobe tower. The walls, constructed with local granite quoinstones and dressed stone, survive only to the second floor level. Whilst records from the Civil Survey of 1654-6 mention both a castle and bawn being in good repair, the only potential evidence of the defensive bawn today might be the small walled enclosure with brick crenellation that incorporates the tower house at its northwestern corner, though this could be a later addition to the site.