Edward Bruce, brother of Robert the Bruce, died during the battle.  He was attempting to force the Irish under Scottish rule.

Battle of Faughart

The Battle of Faughart was fought on 14 October 1318 between a Hiberno-Norman force led by John de Bermingham and Edmund Butler, and a Scots-Irish army commanded by Edward Bruce, brother of Robert Bruce, king of Scotland. It was a battle of the First War of Scottish Independence and more precisely the Irish Bruce Wars. The defeat and death of Bruce at the battle ended the attempt to revive the High Kingship of Ireland. It also ended, for the time being, King Robert's attempt to open up a second front against the English in the War of Scottish Independence.

• http://en.wikipedia.org/wiki/Battle of Faughart