The Battle of Clontarf (Irish: Cath Chluain Tarbh) was a battle that took place on 23 April 1014 between the forces of Brian Boru, high king of Ireland, and a Viking-Irish alliance comprising the forces of Sigtrygg Silkbeard, king of Dublin, Máel Mórda mac Murchada, king of Leinster, and a Viking contingent led by Sigurd of Orkney, and Brodir of Mann. It lasted from sunrise to sunset, and ended in a rout of the Viking and Leinster forces. Brian was killed in the course of the battle, as were his son Murchad, and his grandson Toirdelbach. After the battle, the Vikings of Dublin were reduced to a secondary power. Brian's family was temporarily eclipsed, and there was no undisputed high king of Ireland until the late 12th century.