ARDFINNAN CASTLE

                                                                                                                                                                 The 13th century keep, which Cambro-Norman, Maurice de Prendergast was ordered to construct by John of England, Lord of Ireland.  Later it was handed over to the Knights Templar, followed by the Knights Hospitaller.

After passing through many difficult historic periods, the castle's tower-house received a Victorian restoration circa 1846, with the addition of adjoining buildings and was turned into a country house with the addition of adjoining buildings.  It eventually passed into the hands of the Mulcahy-Redmond family, owners of the famous, now-defunct adjacent woollen mill. Much more about the place's history can be read at:

https://en.wikipedia.org/wiki/Ardfinnan_Castle

also

https://en.wikipedia.org/wiki/Ardfinnan_Woollen_Mills