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- Death of Ragnar.
- Death of Aslaug.
- Invasion of Spain.
- The Greath Heathen Army invades England under the command of the "Lothbrok's"
- Battle of Repton commences of Ivar The Boneless and Bjorn Ironside.
- Despite being based mainly on real events, many of the battles and character ages are out of order. E.g. the two sieges of Paris were forty years apart while in the show only a year.
- Rollo's marriage was in 911.
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