The Battle of Lough Raska (Irish: Loch Rasca) or Battle of Corcomroe (Irish: Corca Mrua) took place on 15 August 1317 near Corcomroe Abbey in north County Clare, Ireland. It was part of a fight for control of the Uí Briain chieftaincy and part of the Anglo-Norman wars in Ireland. Forces loyal to Muircheartach Ó Briain were commanded by Diarmait Ó Briain in a pitched battle against Donnchadh Ó Briain, who was an ally of Mathghamhain Ó Briain and Richard de Clare. Both armies were about 9,000 men each. Diarmait Ó Briain's forces were victorious. This would be a precursor to the Battle of Dysert O'Dea.^[1]

Battle of Lough Raska
Corcomroe Abbey and surrounding landscape
Date 15 August 1317 Location near Corcomroe Abbey, County Clare, Ireland Result Victory for Murtagh's forces
Belligerents
Murtagh O'Brien's forces	Mahon O'Brien's forces
Commanders and leaders
Dermot O'Brien	Donough O'Brien
Strength
~9,000	~9,000