Sigurd the Mighty
Killed by a severed head in 892
Sigurd was an Earl of Orkney and one of the leaders of the Viking conquest of Northern Scotland. In battle, he took the head of Máel Brigte, and tied it to the back of his horse to celebrate the victory.
The head bounced off the ground and swung at him, lodging the tooth of the victim into Sigurd’s leg. He died of a fatal infection.