The Vikings originated from Norway, Sweden, and Denmark, known as Scandinavia. With infertile land, they became invaders who traveled to Ireland in longships made of timber with wool sails. They rowed when weather was calm. The Vikings settled in places they invaded, including Limerick, Waterford, Dublin, and Clontarf. In 1014, the Battle of Clontarf occurred where the Vikings fighting the Irish led by Brian Boru were defeated, though Brian Boru was killed, marking the end of the Viking age in Ireland.