Ragnar Sigurdsson or Ragnar Lothbrok was a legendary Danish Swedish chieftan. He was the father of Ivar, Ubba, Bjorn, Sigurd and Halfdan.
He was killed by Nothumbrian King Ælla as he was thrown in a pit of vipers. His sons formed the "Great Heathen Army" to take revenge for Ragnar's death. His Swedish province was inherited by Bjorn and his Danish province was inherited by Sigurd.
This character has been based on a real historical figure of Ragnar Lodbrok.
The name Ragnar comes from Old Scandinavian and is deprived from the Germanic name Raganhar. The name is made up of the words ragin, which means "advice", and hari, which means "army".
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