The Battle of Dysert O'Dea took place at Dysert O'Dea near Corofin, Co. Clare, Ireland, on May 10, 1318 during the Irish Bruce Wars 1315-1318. The Norman Richard de Clare attacked the Irish chieftain Conor O'Dea, but his forces were ultimately defeated. De Clare himself was killed and the Kingdom of Thomond remained beyond foreign control for over two hundred years, until 1570.