Siege of Wexford
1169 CE.
Shown on the map at 52.334°, -6.457°.
The siege of Wexford took place in early May 1169 and was the first major clash of the Norman invasion of Ireland. The town was besieged by a combined force of Normans under Robert Fitz-Stephen and soldiers loyal to Diarmait mac Murchadha. After being ousted as King of Leinster, Diarmait had recruited the Normans to help him regain control of Leinster and the semi-independent Norse-Gaelic seaport of Wexford. Although the attackers did not breach the town's walls, Wexford surrendered after almost two days and came under Norman control.
Text from the Wikipedia article Siege of Wexford (1169), licensed CC BY-SA 4.0.