Welsh Roman Fort Confirms Mabinogion Emperor Legend — SkimNews
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- Dr. Mark Merrony of the University of Oxford identified the Roman fort in 2024, roughly 2 miles southwest of the Frenni Fawr summit, after satellite imagery revealed a convincing outline in an overgrown Pembrokeshire field
- Excavations at the site produced two late-fourth-century coins matching the era of Magnus Maximus, alongside an iron stylus, pottery shards, large quantities of Roman tiles, compacted clay floors, and preserved wagon rut marks
- The fort measures 180 by 150 meters in a "playing-card form with rounded corners," holds space for roughly 500 troops, and contains a headquarters building oriented east "facing the enemy" plus an attached commander's house
- The site's geography matches the Mabinogion tale "The Dream of Macsen Wledig," which describes Magnus Maximus pitching camp at Frenni Fawr, the 395-metre easternmost peak of the Preseli Hills
- Merrony's find overturns prior assumptions that the area's Indigenous Celtic tribe coexisted peacefully with Roman invaders, since the heavily fortified auxiliary fort implies an army was stationed nearby
- Merrony previously identified a Roman road along the Preselis Hills' southern shoulder in 2022, challenging the view that Romans avoided deep Wales; his findings will appear in Antiqvvs magazine and his forthcoming book "Lives of the Roman Emperors"
Why it matters: The Pembrokeshire dig supplies the first material evidence tying a 1,700-year-old Welsh literary tradition to a real military location and timeframe, forcing a rewrite of how far Roman forces penetrated western Wales and how Rome engaged the local Celtic population. For archaeologists and Mabinogion scholars alike, two coins near a named peak convert a medieval story into testable history.
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