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Styrbjörn the Strong (died c. 985), was a legendary Scandinavian prince and the son of the Swedish King Olof who was immortalized in the Norse sagas. His original name was Björn Olofsson and Styr- was added by his uncle when he grew up, as an epithet meaning that he was restless and violent.
- He is an ancestor of Sean Molloy, a 21st century teenager working for the rogue Templar, Isaiah.
- Harald Bluetooth tried multiple times to use the Devotion Prong to influence Styrbjörn but to no avail, as the Prince seemed absolutely immune to its effects hinting that he possessed a strong concentration of Isu DNA.