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Cross-Marked Stone at Cilymaenllwyd House is an early medieval stone bearing incised cross markings, situated in South Wales on bedrock of the Upper Coal Measures Formation. The underlying geology of mudstone, siltstone and sandstone deposits, laid down during the Westphalian period, provides the local stone resources typical of this coalfield landscape.
Stones of this type, marked with simple cross motifs, date to the early medieval period and are commonly interpreted as Christian monuments or markers, though their precise function remains debated amongst scholars. They may have served as territorial boundaries, burial markers, or expressions of Christian faith during the period of early Christian expansion across Wales.
The monument is protected by Cadw, the Welsh Historic Monuments service, under reference number CM217. Its survival at this location reflects the enduring presence of early Christian material culture in the South Wales landscape, preserving evidence of the region's transition from Roman to early medieval society and the consolidation of Christian practice in the post-Roman Welsh territories.
Cross-Marked Stone at Cilymaenllwyd House is a scheduled monument protected by Cadw under reference CM217. View the official record →
Cross-Marked Stone at Cilymaenllwyd House is an early medieval stone bearing incised cross markings, situated in South Wales on bedrock of the Upper Coal Measures Formation. It is designated a Scheduled Ancient Monument by Cadw under reference CM217.
Cross-Marked Stone at Cilymaenllwyd House dates from the early medieval period, and is classified as a cross-marked stone. It is one of over 32,000 scheduled monuments protected across the UK.
Cross-Marked Stone at Cilymaenllwyd House 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 CM217.
Several scheduled monuments lie within 10 km, including Bovehill Castle (8.3 km), Weobley Castle (8.8 km), St Madoc's Church cross-incised stones (8.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cross-Marked Stone at Cilymaenllwyd House'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.
Cross-Marked Stone at Cilymaenllwyd House stands on South Wales Upper Coal Measures Formation, bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.