Events occurring at some time during this year
Athelstan becomes overlord King
With the death of Sihtric, the Danish leader in the North of England, Athelstan was able to then drive out the Dane's sons. This left Athelstan the master of Northumbria. His attacks on the Welsh and the submission of Constantine the King of Scotland and Owen the King of Cumberland led to him becoming overlord.
Athelstan defeats the Vikings
Episode: Viking Invasions
When Sihtric died he left an heir Olaf. The king of the Norse in Dublin arrived to assist Olaf but Athelstan was ready for any trouble that they could do and defeated them. York was seized and its fortifications destroyed.