The decisive battle of Cnut's conquest, fought on 18 October 1016 at Assandun (possibly Ashingdon in Essex). Eadric Streona, ealdorman of Mercia and a notorious turncoat, deserted Edmund mid-battle with his Magonsaetan forces. The resulting rout killed most of the remaining English nobility — Ulfcytel Snillingr, Aethelweard son of Aethelwine, and many others. The Treaty of Alney that followed divided England between Edmund (Wessex) and Cnut. Edmund's death weeks later gave Cnut all of England.
Most of the English nobility killed; Ulfcytel Snillingr killed
This battlefield is listed on the Register of Historic Battlefields — a national designation identifying Britain's most significant battle sites for protection and further research. Reference: ENG 48.
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