During the working of the Commission for the Arterial Drainage of Ireland, a crannog was discovered in this county, locality not mentioned.[230] “Just above the Pass Bridge, at the east end of Droughtville demesne, is a marsh, called the ‘Muddy Lake’ on the Ordnance Map, but by the people, the ‘Island Lough.’ On the north side of this marsh there is a small island, on which are the remains of _Kiltubrid Castle_. Between the castle and mainland, on the north side, there is an ancient causeway about one hundred yards in length.” A new channel made by the Drainage Commissioners in 1852, crossed this causeway within thirty yards of the castle. In the excavation several large pieces of oak were found, having evidently formed portion of a framework, as the mortises were tolerably perfect. Here also were discovered an article formed of wood, a pan of white bronze or _findruin_, three coins of the reign of Charles I., two of Elizabeth, and numerous others worn and defaced.[231] QUEEN’S COUNTY. _Grantstown._--About the year 1860, the permanent water-level of this lake being lowered six feet, disclosed an artificial island; the stakes forming the enclosure were very sharply pointed; those laid horizontally in the centre were grooved and nailed together. R. Langrishe--who had visited Grantstown, and was often on the lake--states that the country people spoke of these remains as “the castle”: they said “it had sunk.” No canoe was found, the water in the immediate vicinity of the crannog being upwards of eighty feet in depth. The only relics discovered were an iron hasp, two nails with large heads, an arrow or spear of charred wood, a polished piece of bone resembling a pin for the hair, having grooved circles all round it at top, an enormous quantity of animal bones and charred timber, a lump of gypsum, also a rude box, about four and a-half feet in length, which contained two small bones.[232]