The pass was of historical military importance as it controlled the route between Ulster and The Pale around Dublin. Moyry Castle was constructed to guard the pass. A number of battles have been fought in or around the pass including the Battle of Moyry Pass in 1600 and several engagements during the Williamite War in Ireland.
- Spring p.105
- Peter, Spring. Great Walls and Linear Barriers. Pen and Sword, 2015.
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