KILLARE, a parish, in the barony of RATHCONRATH, county of MEATH, and province of LEINSTER, on the road from Mullingar to Athlone ; containing. with part of the post-town of Ballymore, 3849 inhabitants. This place is supposed by Camden to have been the Laberus of Ptolemy, and is distinguished by a lofty and isolated hill, which bounds it on the north-west, called Knock-Usneach, and said to have been celebrated for the ancient provincial assemblies of the native Irish. A religious house was founded here at a very early period, and subsequently became the head of a small see, of which St. Aid is said to have been bishop in 588 ; of this establishment, and also of a castle founded by the family of the Geoghegans, there are still some slight remains. The parish comprises 6950 statute acres, as applotted under the tithe act ; the land is principally under tillage ; the system of agriculture is improving, and there is a small portion of bog. The principal seat is Mosstown, the handsome residence of Theobald Featherston-H, Esq. Fairs and petty sessions are held at Ballymore. It is an impropriate curacy, in the diocese of Meath, annexed to the perpetual curacy of Ballymore, or St. Owen's of Loughseudy. The rectory is impropriate in Mrs. F. C. Reade : the tithes amount to £260. There is neither church, glebe-house, nor glebe. In the R. C. divisions it is also part of the union or district of Ballymore. There are four private schools, in which about 170 children are taught. In the village, which consists only of a few cabins, are the ruins of the old parish church, with a burial-ground ; and opposite to it is a remarkably high mound, at the base of which is another ruin of very great antiquity, with a well dedicated to St. Bridget. In the centre of the parish is Clare Hill, on the summit of which are the remains of a castle and fortifications, said to have be longed to the family of De Lacy. Near Mosstown are the remains of the ancient castle of Killenbrack ; and within that demesne, on a small mound, is a burial-place of the Judge family, of King's county.