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  Unknown Exact Date
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  Battle of Camlann, according to Annales Cambriae. Death (or unspecified other demise) of Arthur
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  Britons, under overall command of Ambrosius and battlefield command of the "war leader" Arthur, defeat Saxons at the Siege of Mount Badon.
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  Arthurs Twelve Battles, which gave is reputation for being invincible.