Harald Sigurdsson, or Harald, was the king of Norway from 1046 to 1066. He also made an aim for the Danish throne and the English throne. He was a mercenary and a military leader before taking over as the king. His death marked the end of the Viking Age.
While some believe Eric Bloodaxe was the son of Norwegian king Harald Fairhair, others believe Danish king Harald Bluetooth was his father. True to his nickname, he was a barbarian Viking tyrant who slaughtered his four brothers for the Norwegian throne. Icelandic sagas mention he married a witch named Gunnhild.