Birth Place: Rogaland, Norway
Born 845 to Trygva Ivarson, a wealthy landowner and Astrid Bjornsdottir. Arn was third son and felt he could never escape the shadows of his older brothers, Wulf and Erik.
Arn knew he would not inherit and knew he had to make his own name. A capable hunter and warrior, in 865 Arne knew his cousin Gunnar was planning to leave, so he gathered his meagre belongings and his father's fighting axe and went with him.
Drinking and fighting their way west, the pair gained notoriety, Arne for his wit and Gunnar for his drinking and both for their battle skills. It was Arn, who in a night of drunken revelry, split Gunnar's shield with his axe, earning Gunnar the name of SplitShield.
Arn stood with Gunnar when he married Ljufa Brundottir in Kaupang.
Learning his hunter skill and weapon craft from his grandfathers, Ivar Valdarson and Bjorn Ulfson, themselves a great warrior and hunter respectively.
Defeated in his first battle, Arn was gifted his sword by the lord who beat them in recognition for his ferocity and loyalty to his cousin who he defended when he was injured. They joined the mans crew and have been loyal to Magnus the Ruthless ever since.