Castlereagh (County Down townland)
Former hamlet in County Down, Northern Ireland / From Wikipedia, the free encyclopedia
54.5771795°N 5.88821°W / 54.5771795; -5.88821 Castlereagh (from Irish An Caisleán Riabhach, meaning "the grey castle")[1] is a townland and former hamlet in the civil parish of Knockbreda, barony of Castlereagh Lower, in County Down, Northern Ireland.[1] It is southeast of Belfast and now at the fringe of the city's suburbs. The townland has an area of 415 acres (168 ha).[2]