BattlefieldsIrish Raids on Roman Wales — Late Roman Period
Roman Period

Irish Raids on Roman Wales — Late Roman Period

360
Pembrokeshire, Wales
Also known as: Scotti raids on west Wales 4th century · Irish attacks on Dyfed
Era
Roman Period
Battle Type
Skirmish
Location
Pembrokeshire, Wales
Status
Unregistered
The Combatants

Who Fought

Defeated
Roman-British population of west Wales
VS
Victor
Irish / Scotti raiders
Outcome
Irish settlement in Dyfed begins; Roman coastal defences overwhelmed
The Battle

History & Significance

In the late Roman period (4th century), Irish tribes (Scotti) conducted sustained raids and eventually settled in south-west Wales. The Deisi tribe from Munster settled in Dyfed — their early memorial stones with Ogham inscriptions survive at several sites. Leinster Irish settled in the Llŷn Peninsula (Lleyn = Leinster). These Irish incursions fundamentally changed the ethnic composition of west Wales and left a legacy of Irish-language inscriptions unique in Britain. Roman coastal defences were unable to prevent this migration.

Forces Involved

Irish/Scotti: c. 1,000–3,000 raiders. Roman-British: militia c. 300–600.

Questions & Answers

Frequently Asked Questions

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