Battle of Thurles
The Battle of Thurles took place in October 1174 near Thurles in County Tipperary, and was a significant engagement of the Anglo-Norman invasion of Ireland. The forces of an alliance of Irish led by the High King Ruaidrí Ua Conchobair defeated an Anglo-Norman expedition led by the Earl Richard "Strongbow" de Clare and forced the English army to retreat. According to the Annals of the Four Masters (English translation):

M1174.10
The Earl led an army to plunder Munster; King Roderic marched with another army to defend it against them. When the English had heard of Roderic's arrival in Munster, for the purpose of giving them battle, they solicited to their assistance the Galls Ostmen of Dublin; and these made no delay till they came to Thurles. Thither came Donnell O'Brien and the Dalcassians, the battalion of West Connaught, the great battalion of the Sil-Murray, besides numerous other good troops left there by the King, Roderic.