Brian Boru, the Vikings & the Battle of Clontarf

Vikings in Ireland

1. 1 Vikings arrive (795 CE) Norse Vikings began raiding the Irish coast from 795 CE — attacking monasteries for their treasures. Raids continued for decades, becoming settlements in the 9th century.
2. 2 Viking settlements Vikings founded several of Ireland's major towns: Dublin (Dyflinn), Waterford, Wexford, Cork, Limerick. These were trading ports — the Vikings were traders as well as raiders.
3. 3 Brian Boru (c.941–1014) King of Munster who rose to become High King of Ireland (Ard Rí) — the first king to effectively unite most of Ireland under one rule. Born near Killaloe, Co. Clare.
4. 4 Battle of Clontarf (23 April 1014) Brian Boru's forces defeated a Viking and Leinster alliance near Dublin. Over 10,000 men died. The Vikings never again threatened Irish sovereignty — though they continued to live in their Irish towns.
5. 5 Brian Boru's death Brian was killed in his tent after the battle — by Brodir of the Isle of Man, a Viking leader. He was 73 years old. He died as his forces won the battle.
6. 6 Viking legacy in Ireland Irish place names with Norse roots: Strangford, Wexford, Wicklow, Howth. Words: 'snám' (swimming), 'margadh' (market), 'pingin' (penny). DNA evidence shows significant Norse ancestry in coastal Irish communities.