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St Baglan's Church is a medieval church ruin situated in Wales and protected as a scheduled ancient monument by Cadw under reference GM428. The church stands upon bedrock of the Pennine and South Wales Lower Coal Measures Formation, a Westphalian-age sequence of mudstone, siltstone, sandstone with coal seams and ironstone that underlies much of the South Wales coalfield. This geology would have shaped both the appearance of local building stone and the economic development of the surrounding landscape in later centuries.
The ruins reveal the typical plan of a small medieval parish church, a settlement form common throughout Wales from the Norman period onwards. Such churches served as focal points for rural communities, combining spiritual function with social importance. The surviving stonework demonstrates the building techniques and materials available to medieval masons working in this coal-measure terrain.
St Baglan's Church remains a significant record of medieval religious life in Wales. Its protected status reflects its archaeological importance as evidence of settlement patterns, architectural practice and religious organisation during the medieval period. The site contributes to understanding how communities were structured and where they invested resources across the Welsh landscape.
Ruins of St Baglan's Church is a scheduled monument protected by Cadw under reference GM428. View the official record →
St Baglan's Church is a medieval church ruin situated in Wales and protected as a scheduled ancient monument by Cadw under reference GM428.
Ruins of St Baglan's Church dates from the medieval period, and is classified as a church. It is one of over 32,000 scheduled monuments protected across the UK.
Ruins of St Baglan's Church 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 GM428.
Several scheduled monuments lie within 10 km, including Ergyd Isaf Round Barrows (5.5 km), Ergyd Uchaf Round Barrow (6.3 km), Chain Home Low Radar Station, Margam (6.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Ruins of St Baglan's Church'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.
Ruins of St Baglan's Church stands on Pennine Lower Coal Measures Formation And South Wales Lower Coal Measures Formation (Undifferentiated), bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.