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For the civil parish of County Cork, see Ballyhay, County Cork.
Ballyhay (from Irish: Baile Hae, meaning "Hay's townland")is a townland near Donaghadee in County Down, Northern Ireland. It is situated in the civil parish of Donaghadee and the historic barony of Ards Lower
- "Ballyhay". Place Names NI. Retrieved 21 February 2013.