COOLLATTIN, a village, in the new district parish of SHILLELAGH, barony of SHILLELAGH, county of WICKLOW, and province of LEINSTER, 3¼ miles (S.byW.) from Tinahely, on the road to Carnew; containing 21 houses and 108 inhabitants. It derives its name from the contiguous seat and demesne of Coollattin, the property of Earl Fitzwilliam, and the residence of R. Chaloner, Esq. Fairs are held on the 26th of Feb., May, Aug., and Nov. The Shillelagh Farming Society was established here in 1830, by the late Earl Fitzwilliam.