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Merthyr Mawr Inscribed Stones is a medieval cross now housed within St Rogue's Chapel in Wales. The monument comprises carved stone fragments bearing inscriptions characteristic of medieval Welsh religious monuments. Such crosses served as focal points for worship and commemoration within early Christian communities, often marking sacred sites or commemorating significant individuals. The stones reflect the craftmanship and devotional practices of medieval Wales.
The site sits upon bedrock of the Lias Group, a geological formation of mudstone, siltstone, limestone and sandstone deposited during the Aalenian age. This local geology would have provided the stone from which the cross was fashioned, making use of materials readily available in the surrounding landscape. The choice of such stone was typical for medieval stonemasons working in Wales, who utilised indigenous geological resources for their religious monuments.
The inscribed stones are protected by Cadw, the Welsh Historic Monuments service, under reference GM026. This statutory protection recognises the monument's significance as evidence of medieval religious culture and Welsh cultural heritage. By remaining within the chapel structure, the stones continue to occupy their devotional setting, preserving both the physical artefact and its spiritual context for contemporary understanding.
Merthyr Mawr Inscribed Stones (now in St Rogue's Chapel) is a scheduled monument protected by Cadw under reference GM026. View the official record →
Merthyr Mawr Inscribed Stones is a medieval cross now housed within St Rogue's Chapel in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference GM026.
Merthyr Mawr Inscribed Stones (now in St Rogue's Chapel) dates from the medieval period, and is classified as a cross. It is one of over 32,000 scheduled monuments protected across the UK.
Merthyr Mawr Inscribed Stones (now in St Rogue's Chapel) is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is GM026.
Several scheduled monuments lie within 10 km, including Cwm Bach Camps (6.7 km), Buarth-Mawr Barn (6.8 km), Cwm Nash Defended Enclosure (7.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Merthyr Mawr Inscribed Stones (now in St Rogue's Chapel)'s history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Merthyr Mawr Inscribed Stones (now in St Rogue's Chapel) stands on Lias Group, bedrock that formed in the Aalenian. The rock here is mudstone, siltstone, limestone and sandstone.