Along the tight, tidal waters of Carlingford Lough, near modern Warrenpoint, a clash in the mid-10th century marked a quiet turning point in Ireland’s long war with the Vikings. What makes the battle fascinating is not only what happened—but how it was remembered. The Irish annals, including the Annals of Ulster, record the event with brutal economy. A Norse force entered the lough. It was met, checked, and defeated. No battlefield name. No detailed tactics. No commander clearly identified. Just