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St John's Priory is a medieval priory located in Wales and protected by Cadw as a scheduled monument under reference CM236. The priory stands upon bedrock of Arenig Rocks, composed of mudstone, siltstone and sandstone laid down during the Arenigian period of the Ordovician, which provides a firm foundation typical of upland Welsh sites. This ancient geology shaped both the physical stability and the character of the landscape in which the religious community established itself.
The priory represents the medieval expansion of monastic life across Wales, a period when religious communities played a central role in settlement patterns, land management and spiritual life. Built upon the early Paleozoic bedrock of the Welsh landscape, the priory would have been constructed using locally available stone and materials suited to both the geology and climate of its region.
Today the surviving remains of St John's Priory form an important record of medieval religious architecture and monastic practice in Wales. The site's physical remains, preserved and protected by Cadw, contribute to understanding how medieval communities adapted their building practices to the challenging topography and geology of the Welsh uplands, where Arenig rocks form much of the underlying landscape.
St John's Priory is a scheduled monument protected by Cadw under reference CM236. View the official record →
St John's Priory is a medieval priory located in Wales and protected by Cadw as a scheduled monument under reference CM236.
St John's Priory dates from the medieval period, and is classified as a priory. It is one of over 32,000 scheduled monuments protected across the UK.
St John's Priory 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 CM236.
Several scheduled monuments lie within 10 km, including Rhyd-Lydan Cromlech (6 km), Banc y Bettws Castle Mound (6.4 km), Standing Stone NNW of Clomendy (6.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of St John's Priory'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.
St John's Priory stands on Arenig Rocks (Undifferentiated), bedrock that formed in the Arenigian. The rock here is mudstone, siltstone and sandstone.