BattlefieldsBattle of Mynydd y Gwair
Early Medieval

Battle of Mynydd y Gwair

990
Glamorgan, Wales
Also known as: Welsh inter-kingdom battle Gower c.990
Era
Early Medieval
Battle Type
Skirmish
Location
Glamorgan, Wales
Status
Unregistered
The Combatants

Who Fought

Defeated
Gwent (Morgan ab Owain)
VS
Victor
Deheubarth / Gwynedd coalition
Outcome
Dynastic conflict in south Wales
The Battle

History & Significance

Welsh dynastic warfare of the late tenth century is poorly documented but was endemic. The Brut y Tywysogion records battles between Welsh kingdoms throughout this period. Morgan ab Owain of Gwent was a significant figure in the south-east; conflicts between Gwent and Deheubarth over the Gower peninsula were persistent. Location is estimated on the high ground between Swansea and Brecon. Confidence is low as specific details are sparse in surviving sources.

Forces Involved

Deheubarth/Gwynedd: c. 1,500–2,500. Gwent: c. 1,000–2,000.

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