Was Ivar the Boneless cruel? - Quora

Answer: Yes. He was said to have fought like a berserker. It’s also been said that he used the blood Eagle torture method in King Aelle. The back is sliced open, so hid ribs and lungs could be pulled out, whilst still alive. He also killed King Edmund by having him tied to a tree, multiple arrows

Were the Vikings really as brutal as pop-history likes to portray them? I know they were also masterful traders and explorers. - Quora

Ivar The Boneless - The Crippled, Brutal Viking Leader

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Was Ivar the Boneless a cripple? - Quora

Was Ivar the Boneless cruel? - Quora

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Ivar the Boneless, Biography, Battles, & Facts