Here, too, are historic associations.  The huge square tower that rises at one side of the stable-yard close to the old house, to a height that amazed my young eyes, though robbed of its battlements and one story, was a stronghold of the last rebellious Earl of Desmond, and is specially mentioned in that delightful old folio, the Hibernia Pacata, as having, with its Irish garrison on the battlements, defied the army of the lord deputy, then marching by upon the summits of the overhanging hills.  The house, built under shelter of this stronghold of the once proud and turbulent Desmonds, is old, but snug, with a multitude of small low rooms, such as I have seen in houses of the same age in Shropshire and the neighbouring English counties.

The hills that overhang the lakes appeared to me, in my young days (and I have not seen them since), to be clothed with a short soft verdure, of a hue so dark and vivid as I had never seen before.

In one of the lakes is a small island, rocky and wooded, which is believed by the peasantry to represent the top of the highest tower of the castle which sank, under a spell, to the bottom.  In certain states of the atmosphere, I have heard educated people say, when in a boat you have reached a certain distance, the island appears to rise some feet from the water, its rocks assume the appearance of masonry, and the whole circuit presents very much the effect of the battlements of a castle rising above the surface of the lake.

This was Miss Anne Baily’s story of the submersion of this lost castle: 

The Magician Earl

It is well known that the great Earl of Desmond, though history pretends to dispose of him differently, lives to this hour enchanted in his castle, with all his household, at the bottom of the lake.

There was not, in his day, in all the world, so accomplished a magician as he.  His fairest castle stood upon an island in the lake, and to this he brought his young and beautiful bride, whom he loved but too well; for she prevailed upon his folly to risk all to gratify her imperious caprice.

They had not been long in this beautiful castle, when she one day presented herself in the chamber in which her husband studied his forbidden art, and there implored him to exhibit before her some of the wonders of his evil science.  He resisted long; but her entreaties, tears, and wheedlings were at length too much for him and he consented.

But before beginning those astonishing transformations with which he was about to amaze her, he explained to her the awful conditions and dangers of the experiment.

Alone in this vast apartment, the walls of which were lapped, far below, by the lake whose dark waters lay waiting to swallow them, she must witness a certain series of frightful phenomena, which once commenced, he could neither abridge nor mitigate; and if throughout their ghastly succession she spoke one word, or uttered one exclamation, the castle and all that it contained would in one instant subside to the bottom of the lake, there to remain, under the servitude of a strong spell, for ages.