King Edward the Elder begins the conquest of the Viking-controlled area of England. In 917 he destroys East Anglia, and by 918 he will retake Mercia and the Danish areas of the Midlands. In 919 the Viking leader of Northumberland acknowledges Edward’s overall rule.
Editors. "Beginnings of the English reconquest of the Danelaw". The Literary Encyclopedia. First published 01 May 2009
[http://www.litencyc.com/php/stopics.php?rec=true&UID=7020, accessed 03 March 2015.]