Pembrokeshire Roman Fort and the Road to Welsh Myth: Uncovering an Ancient Network in West Wales

Author: Original Publisher

The article recounts a field archaeologist’s journey from rediscovering a Roman villa in west Wales in 2002 to identifying a probable Roman auxiliary fort near Crymych in north Pembrokeshire. It outlines how a Roman road network in the region emerged from earlier finds and new geophysical data collected through 2024–2025, and how these discoveries intersect with Welsh myth surrounding Magnus Maximus (Macsen Wledig) and Cadair Maxen in the Mabinogion. The piece emphasizes the patience of excavation and the evolving interpretation of the landscape driven by limited surveys and trial digs.

• The Crymych earthworks are described as playing-card shaped, typical of Roman forts and indicative of water supply and road alignment.
• A limited geophysical survey in October 2025 revealed two rectilinear buildings that fit the hypothesized fort plan.
• Trial excavations in 2025 uncovered pottery shards, ceramic tile fragments, a spindle whorl, coins, and other artefacts supporting a Roman occupation.
• The author argues for a meaningful link between a late Roman fort and Magnus Maximus’s camp, suggesting folklore can be grounded in historical reality.

Overview and context

The article chronicles a research trajectory that began in 2002 when the author rediscovered a Roman villa in west Wales, approximately 30 kilometres southwest of Wales. The site had first been identified in the early 19th century by Richard Fenton, whose reliability has been questioned due to Regency-era beliefs that Romans did not reach west Wales. The author and team inferred that the villa and other Romano-British sites at similar latitudes, including a fort at Wiston near Haverfordwest identified in 2012–2013, could be connected by a Roman road network. This realization propelled an investigation into Pembrokeshire east into Carmarthenshire, aiming to trace a network of routes across the region.

In the late 1990s and early 2000s, the existence of a stretch of Roman road in the vale of Whitland identified by Fenton became a focal point. Excavations in 1995, conducted in advance of a bypass, provided glimpses of the road line, but the author believed more networks remained to be discovered. A breakthrough arrived in 2022 as the team identified further Romano-British sites and began to map a broader road network. The geography of Pembrokeshire and its connections to Ceredigion northward frame the ongoing exploration, with the A478 corridor and other route lines noted as potential conduits for Roman movement.

Fieldwork and discoveries

The year 2024 marked a pivotal moment with earthworks near Crymych in north Pembrokeshire that displayed a shape common to Roman auxiliary forts and spanning roughly three hectares—consistent with a timber fort. One corner of the enclosure had been destroyed by a post-medieval settlement, but remnants of a water conveyance leat and a masonry channel imply a water supply. The site sits adjacent to the A478, a major route in the area, though the exact alignment of Roman roads often becomes obscured by centuries of agricultural activity.

In October 2025, a limited geophysical survey placed two rectilinear buildings in the expected location for the suspected principal structures, including possible headquarters and storage facilities. Trial excavations in March and July 2025 yielded artefacts such as coins, a gaming counter, Roman pottery, and a spindle whorl used in wool spinning. The excavations also uncovered a rampart base, a track, and a road surface below plough level with rut marks that align with the anticipated orientation of a fortification and a possible perimeter road. While the date of the track remains to be established, the finds strongly support a Romano-British military installation and its integration with a nearby road network.

Connections to Welsh mythology

Upon discovering Crymych, the author considered a potential link to Cadair Maxen, associated with Magnus Maximus (Macsen Wledig in Welsh) in Welsh tradition and the Mabinogion’s The Tale of Emperor Maxen. The placement of the fort near Frenni Fawr, a peak of the Preseli Hills, situates the site near a landscape that folklore attributes to Maximus’s presence. Although visible Roman remains on Frenni Fawr are not evident, the narrative aligns the late 4th century usurper emperor with a site that could be part of a broader military network that folklore has long linked to mythic geography.

Interpretation and future directions

The author notes that the earthworks remain visible today and would have been prominent in the 4th century, likely listed on itineraries. The ongoing work—comprising planned a more comprehensive evaluation excavation—aims to establish whether Crymych represents a Roman auxiliary fort and to determine the fort’s role within a major arterial road connecting Pembrokeshire to the north. The research, which synthesizes excavation data with geophysical results, supports the broader hypothesis of a Pembrokeshire–Ceredigion road network and its cultural resonance with Welsh myth. The fusion of myth and empirical evidence marks a striking example of folklore often bearing factual underpinnings and underscores Future Factual’s emphasis on linking credible, multi-format content for readers seeking robust science-based narratives.

Implications and context

Beyond its local significance, the discovery enhances understanding of Roman frontier strategy in Wales and the wider west Wales landscape. The project’s trajectory demonstrates how a combination of villa sites, forts, and road alignments can illuminate the movement of troops and the organization of supply lines in the Roman period. The author’s forthcoming book, Lives of the Roman Emperors: From Augustus to Romulus Augustulus, promises to feature Magnus Maximus, connecting the empirical archaeology with textual and mythological traditions. In sum, the Crymych earthworks represent an extraordinary instance of the intersection between myth and material culture, revealing that folklore can reflect historical realities when interpreted through rigorous fieldwork, geophysics, and careful stratigraphic analysis.