Mysterious Roman fort discovered in remote area could prove ancient legend has roots in reality

An ancient Roman fort discovered in a remote part of Wales could help unravel a centuries-old legend about a Roman emperor — and may have accommodated as many as 1,000 soldiers, the archaeologist told Fox News Digital.

The fort, located near Frenni Fawr in Pembrokeshire, was the subject of an October announcement by Wolfson College, Oxford, following recent excavations at the site.

Mark Merrony, a fellow at Wolfson College, Oxford, and editor-in-chief of Antiqvvs, an archaeology magazine, first identified the fort using satellite imagery in 2024.

More recent excavations uncovered two Roman coins from the late fourth century, suggesting activity at the site may have continued into the period when ruled Britain from 383 to 388 A.D.

Merrony, who described the fort's location as being in the "middle of nowhere," told Fox News Digital the site could have accommodated significantly more soldiers than he initially estimated.

"I've been saying 500 troops, but actually it's bigger than the housesteads on Hadrian's Wall, which held 1,000 troops," he said.

"So it could have held up to 1,000 auxiliary Roman soldiers."

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Excavations also uncovered numerous Roman artifacts, including ceramic roofing tiles and what Merrony believes could be floor tiles or materials used for underfloor heating.

Despite the attention surrounding the fourth-century coins, Merrony believes the fort itself is more significant.

"I think the presence of the site is more important than the coins because it was almost certainly founded in the 1st century," he said.

The possible connection to Maximus stems from the "Mabinogion," a medieval collection of Welsh tales and legends that also features King Arthur.

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One story recounts the Roman emperor establishing a military camp near Frenni Fawr.

Merrony told Fox News Digital he identified the fort while tracing the Roman road network, rather than deliberately searching for evidence of the legend.

After discovering the fort roughly two miles from the hill's summit, he found no other known nearby — leading him to suspect the fort could be the one described in the "Mabinogion."

"And I put two and two together, and I thought the question is not whether this is the site. The question is, is the Mabinogion correct? And I suspect it is," Merrony said.

He cited the story's "very strong historical underpinning," suggesting that Roman soldiers may have traveled through the area during the late Roman period, possibly under Magnus Maximus himself.

Though the discovery does not establish that the emperor visited the fort, Merrony believes the legend may preserve the memory of an actual historical event.

He said he wasn't surprised that the medieval tale might contain elements of historical truth.

"I think it's often the case with mythology that it's based on something," Merrony told Fox News Digital, adding that it likely spread through oral tradition before being written down.

Merrony also theorized that Maximus may have visited the region in response to incursions by Irish groups during the fourth century, before departing Britain for .