Notes |
- The first half of the seventh century saw a struggle between the
Anglo-Saxon kingdom of Northumbria and Gwynedd for the mastery of the
former province of Britain. Cadwallon of Gwynedd allied himself with
Penda, the pagan Anglo-Saxon king of Mercia, against Edwin of
Northumbria. In 633 the allies defeated and killed Edwin and Cadwallon
became the dominant ruler north of the Trent but he was killed a year
later near Hadrians Wall. The struggle continued for some time but
Northumbria emerged victorious and Gwynedds bid for supremacy came to
an end.
In the eighth century Mercia, the former ally emerged as the new
threat and became the leading Anglo-Saxon power. Several Mercian
attacks on Gwynedd followed. At the end of the century, Offa of Mercia
built the dyke which bears his name and this marked the final boundary
between Wales and England. Mercian attacks continued however and in
822 Deganwy, Maelgwn Gwynedds former stronghold was destroyed.
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