Harald was born ca.
1102 in Ireland or the
Hebrides, more likely the former. According to the sagas, he became familiar with Norway through an acquaintance with Norwegian merchants including
Rögnvald Kali Kolsson, who would later become
Earl of Orkney. Around 1127, Harald went to Norway and declared he was an illegitimate son of the former king,
Magnus Barefoot, who had visited Ireland just before his death in 1103. This is not implausible because other descendants of Magnus are reported in Irish sources and he is known to have been particularly fond of at least one Irish woman. Harald consequently claimed to be a half-brother of the reigning king,
Sigurd the Crusader. Harald appears to have submitted successfully to the
ordeal by fire. The alleged relationship was acknowledged by Sigurd on condition that Harald did not claim any share in the government of the kingdom during his lifetime or that of his son
Magnus. Living on friendly terms with the king, Harald kept this agreement until Sigurd's death in 1130. ==Reign==