Toirdhealbhach Ua Briain
Toirdhealbhach Ua Briain was the son of Murchad son of Brian Boru, High King of Ireland. During the Battle of Clontarf Field, 22 April 1014, Tordhelbach, at 15 years old, commanded a host of approximately 1,000 Irishmen and participated in the rout of the Viking "invaders".