The Battle of Edington, fought in May 878 in southwest England, saw Alfred the Great, King of Wessex (r. 871-899), win a decisive victory over the Viking leader Guthrum (d. 890). Two weeks later, under the terms of the Treaty of Wedmore, Guthrum surrendered, agreeing to both convert to Christianity and leave Wessex.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/2691/battle-of-edington/.