Ivar, who ruled over an area covering parts of modern Denmark and Sweden, was reputed to be a berserker, berserkers were Viking warriors who are said to have fought in an uncontrollable, trance-like fury, later giving rise to the English word berserk.
Ivar Ragnarsson or Ivar the Boneless (inn beinlausi) as he was curiously referred to, was a Viking warlord and a man of exceptional cruelty and ferocity, he was the son of Ragnar Lodbrok and Aslaug Sigurdsdottir.
