_Crannog, a common Townland Name._--There are numerous localities throughout Ireland in which the term “crannog” is embodied in the name, and where, consequently, must have been formerly a lake or swamp, with its accompanying artificial island, although in some cases the lake has now disappeared, and the swamp has been drained. In most of the districts in which these islands were found several small lakes are clustered together. In Connaught, near the demesne of Longford, county Sligo, the residence of Sir Malby Crofton, Bart., in a small pond, almost dry in summer, there is an islet, still called by the country people “crannog:” it has bequeathed its name to the townland in which it is situated, _i.e._ “Lochanacrannog,” signifying the _little lake of the crannog_.[38] In the parish of Cloonclare, county Leitrim, is a locality called Crannog Island. In Connemara, county Galway, there is an island in Ballinahinch lake which has given name to a parish and to a barony, the word Ballinahinch signifying _village of the island_. In Ulster there is a townland in county Tyrone called Crannog. In county Donegal, Crannog-boy, or the _yellow lake dwelling_, was the head quarters of The O’Boyle, a steady supporter of the O’Donnels. In county Antrim, Lough Crannagh, situated over Fair Head, probably derives its name from a small artificial island which lies in the centre of the lake.[39] In Loughmacnean, county Fermanagh, are several artificial islets, one of which is called “Crannog Island.” In Leinster there is a townland in county Kilkenny called Cronoge. In Munster there is a place in the parish of Ardagh, county Limerick, called Coolcranoge, _the angle of the lake dwelling_. “Crannog Island,” “sunken island,” “drowned island,” “Inish,” or “the island,” are common designations for diminutive artificial islets, showing themselves above water only during summer drought in many lakes throughout the kingdom. There is hardly a large sheet of water to which is not attached a tradition of a frightful outbreak of flood, covering what was formerly “a town;” or which does not possess its legend of an enchanted well, which, consequent upon some affront offered to its guardian spirit, covered the valley, its inhabitants, and houses. May not these traditions be traceable to lingering remembrance of former lacustrine habitations, for Giraldus Cambrensis, writing in the twelfth century, described the tradition that then prevailed in the north of Ireland, of waters having overwhelmed the plains now occupied by Lough Neagh, a locality the most thickly studded with these remains; and the legend has been immortalized by Moore, who thus alludes to it:-- “On Lough Neagh’s banks as the fisherman strays, When the calm clear eve’s declining, He sees the round towers of other days In the waves beneath him shining.”