BattlefieldsÆthelfrith Campaigns Against Deira c.604
Early Medieval

Æthelfrith Campaigns Against Deira c.604

604
England
Era
Early Medieval
Battle Type
Pitched Battle
Location
England
Status
Unregistered
The Combatants

Who Fought

Defeated
Kingdom of Deira
Forces
Deiran defenders and royal house
VS
Victor
Æthelfrith of Bernicia
Forces
Bernician forces under Æthelfrith
Outcome
Deira absorbed into Northumbria; Deiran royal family driven into exile
The Battle

History & Significance

Æthelfrith of Bernicia progressively absorbed Deira by force and diplomacy, marrying the Deiran princess Acha and expelling or killing rival Deiran princes. Edwin of Deira was driven into long exile visiting multiple kingdoms. The union of Bernicia and Deira under Æthelfrith created the Northumbrian kingdom that would dominate Britain for decades.

Questions & Answers

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