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In page 792:
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- September – King Æthelred I of Northumbria marries Princess Ælfflæd, daughter of King Offa of Mercia, at Catterick. Unrest in Northumbria tempts the exiled king Osred II back to his kingdom from the Isle of Man. His supporters desert him, and Osred II is killed by Æthelred's men at Aynburg. He is buried at Tynemouth Priory.
- Offa arranges coastal defences to fend off Viking attacks. He forms an alliance with Essex, Kent and Sussex, in an attempt to unify England (approximate date).[citation needed]
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