The Treaty of Wedmore is a historically referenced, but not contemporaneously documented, agreement purportedly concluded in 878 CE between the Anglo‑Saxon king Alfred the Great of Wessex and the Danish Viking leader Guthrum following Alfred’s victory at the Battle of Edington. According to later medieval chronicles, the settlement required Guthrum to accept baptism, adopt a Christian name (Æthelstan), and withdraw his forces from the kingdom of Mercia, while Alfred retained control of Wessex and agreed to a defined boundary between the two realms.
Historical context
- Battle of Edington: In May 878, Alfred’s forces defeated Guthrum’s army near present‑day Edington, Wiltshire, forcing the Vikings into retreat.
- Subsequent developments: Guthrum reportedly surrendered, was baptized at nearby Chippenham, and entered into negotiations with Alfred concerning the division of territories.
Source material and scholarly assessment
- The treaty is described in later sources such as the Chronicon of Matthew of Westminster and the Anglo‑Saxon Chronicle entries for the period, but no original charter or contemporaneous record of the agreement survives.
- Modern historians regard the existence of a formal “Treaty of Wedmore” as uncertain. Some scholars view the term as a later historiographical construct summarising the outcomes of the Edington campaign, while others argue that a diplomatic arrangement, albeit not formally documented, likely took place. Consequently, the precise terms and even the formal existence of a treaty remain matters of debate.
Consequences
- Guthrum’s baptism: The conversion of Guthrum to Christianity is generally accepted as a historical fact, marking a significant cultural shift among the Viking settlers.
- Territorial delineation: The settlement laid the groundwork for the later Treaty of Alfred (or Treaty of Wessex) in 886, which more concretely defined the borders between Wessex and the Danelaw.
Assessment of evidentiary status
Because the Treaty of Wedmore is not attested in any surviving primary document and is principally known through later medieval narratives, its historicity cannot be conclusively verified.
Insufficient Encyclopedic Information – The lack of contemporaneous documentary evidence means that definitive details about the treaty’s exact clauses, date, and formal status remain uncertain.