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| | Offa's Dyke Offa |  |
| Offa's Dyke A border with the Welsh territories, extends from the Severn to the Dee Estuary |
| Offa's Dyke Completes 150 mile dyke from the Wye to the Dee |
| Retirement Elfwald | |
| Northumbria Athelbert of York retires, supporter of Elfwald who helped him gain the throne |
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