Alfred the Great Defeats the Vikings at Edington
A king hiding in the marshes turns and breaks the Viking army that nearly conquered Wessex
Quick facts
- Battle
- Edington, Wiltshire, May 878
- Viking leader defeated
- Guthrum
- Frontier agreed, 886
- Along Roman Watling Street
- Later reforms
- Burhs (fortified towns), new navy, reformed coinage
What happened
In January 878 a Viking force under Guthrum caught Alfred, king of Wessex, by surprise, overrunning much of his kingdom and driving him into hiding in the marshes of Athelney in Somerset. Historic England describes how Alfred rebuilt his strength there before marching to Edington on the edge of Salisbury Plain, where in May 878 he defeated Guthrum's army in open battle. The Royal Family's own account states plainly that Alfred's army defeated the Danes at Edington and that in 886 he negotiated a partition treaty with the Danes along the old Roman Watling Street, creating the Danelaw in the north and east while Wessex held the south and west. Alfred followed the victory with a building program of fortified settlements called burhs across southern England and a new navy, giving Wessex what the Royal Family calls a defence in depth.
Why it matters
Edington kept Wessex, the one Anglo-Saxon kingdom the Vikings never conquered, independent at the moment the rest of Anglo-Saxon England had fallen, and it is why Alfred remains the only English king or queen given the title the Great. His fortified burhs and reformed coinage gave Wessex the administrative base his grandson Athelstan would later use to unify the whole of England.
How we know
Alfred's campaign and the Edington victory are recorded in the near-contemporary Anglo-Saxon Chronicle and in Bishop Asser's biography of Alfred, both written within a generation of the events they describe.
Sources
- The Royal Family. Alfred 'The Great' (r. 871-899) · General sourceroyal.uk · Cited as a "reference" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
- Historic England (Heritage Calling blog). The Life and Times of King Alfred the Great · General sourceheritagecalling.com · Cited as a "reference" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
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