This is a very short, sort of potted, History of the old castle.

Dunaneanie is an anglicised version of the Irish and translates as "Fort of the Fair". That same fair "POSSIBLY" exists today as the "Auld Lammas Fair" - which is held every year on the last Tuesday of August. Dunaneanie ( or Dunineeny) castle is only a ruin nowadays. If I remember rightly (in the 1940's) it was only a few bits of stone walls with a part of a moat round it. It stands right on the edge of a cliff with quite a bit having fallen over the cliff. The remains of the moat show about one eight of a circle. From various reports I have read the castle was erected in the 1500's by Alexander MacDonnell. It is believed too, to be the first stone castle erected in County Antrim. The Sorley Boy MacDonnell was reputed to live there.

For better and more historically correct versions of the old castle see the following::

http://www.ballymoneytimes.co.uk/entertainments/By-the-Moyle-shore-volume.1165282.jp
http://www.causewaycoastalroute.com/index.php?option=com_content&view=article&id=52&Itemid=55
http://www.goireland.com/antrim/ballycastle-heritage-trail-attraction-monuments-id13605.htm

There are quite a lot more sites dealing with Dunaneanie castle and it's history. If you are really interested in the history try any of the big search engines to look for "dunaneanie"