 In his youth, Harald displayed traits of a typical rebel with big ambitions, and admired Olaf as his role model.He thus differed from his two older brothers, who were more similar to their father, down-to-earth and mostly concerned with maintaining the farm.The Icelandic sagas, in particular Snorri Sturluson in "Heimskringla", claim that Sigurd, like Olaf's father, was a great-grandson of King Harald Fairhair in the male line.