BattlefieldsSiege of Beaumaris by Glyndwr 1403
Medieval

Siege of Beaumaris by Glyndwr 1403

1403
Wales
Era
Medieval
Battle Type
Pitched Battle
Location
Wales
Status
Unregistered
The Combatants

Who Fought

Forces
Not recorded in historical accounts
Forces
Beaumaris Castle garrison
VS
Victor
Not recorded in historical accounts
Forces
Glyndwr north Wales forces
Outcome
Welsh take Beaumaris town; castle holds, Anglesey briefly under Welsh pressure
The Battle

History & Significance

Glyndwr forces besiege and temporarily capture the town of Beaumaris on Anglesey in 1403, isolating the great concentric castle built by Edward I. The castle itself holds but the loss of the town and Anglesey supply base seriously disrupts English control of north Wales. The action comes amid a general collapse of English authority across Wales.

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