The two forces met at the Battle of Clontarf, on Good Friday in 1014, a battle that claimed the lives of the main commanders on both sides: Brian and his son Murchad on the Munster side; and Máel Mórda, Sigurd and Bróðir on the Leinster-Norse side. According to Irish sources, Sigtrygg did not take part in the battle, but held his garrison in reserve in Dublin. The "Cogadh Gaedhil re Gallaibh" records that Sigtrygg was able to observe the progress of the battle and the movement of the battle standards from the ramparts of his fortress. As the modern Irish medievalist historian Donnchadh Ó Corráin notes, Sigtrygg "wisely kept within the city and lived to tell the tale".