The Battle of Clontarf took place on April 23, 1014, near Dublin, Ireland. It was a significant conflict between the forces of Brian Boru, the High King of Ireland, and a coalition of Irish clans allied with the Vikings. The battle aimed to end Viking influence in Ireland and assert Irish sovereignty. Despite being outnumbered, Brian Boru's forces achieved a decisive victory, leading to the decline of Viking power in Ireland. However, Brian Boru was killed during the battle, which marked a turning point in Irish history, influencing the future political landscape of the region.