Battle of Kilrush
1642 CE.
Shown on the map at 53.062°, -6.863°.
The Battle of Kilrush was a fought during the Irish Confederate Wars. It was fought on 15 April 1642 between a Royalist army under the Earl of Ormonde and Irish Confederate troops commanded by Lord Mountgarret.
Text from the Wikipedia article Battle of Kilrush, licensed CC BY-SA 4.0.