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Castell Eglwyswrw is a medieval motte and bailey earthwork situated in Wales and protected by Cadw as a scheduled monument under reference PE171. The fortification sits upon bedrock of Ashgill Rocks, undifferentiated mudstone, siltstone and sandstone formations, a geology that provided stable foundations for the castle's defensive earthworks. This solid substrate would have offered adequate drainage and structural support for the construction and maintenance of the mound and its associated palisade defences.
The motte and bailey was a characteristic Norman fortification type, combining a raised earthen mound with an adjoining defended enclosure. At Castell Eglwyswrw, these elements exploited the local topography to create a defensive stronghold. The Ashgill bedrock meant that the builders worked within constraints and possibilities set by the underlying geology, which would have influenced both the scale and precise form of the earthworks.
Though little survives of any timber or stone superstructure, the earthwork itself remains the primary archaeological evidence for medieval occupation and control of this locality. The monument represents the period when the Norman lordship of this region was physically expressed through such fortified administrative and defensive centres, a pattern repeated across Wales during and after the twelfth century.
Castell Eglwyswrw is a scheduled monument protected by Cadw under reference PE171. View the official record →
Castell Eglwyswrw is a medieval motte and bailey earthwork situated in Wales and protected by Cadw as a scheduled monument under reference PE171.
Castell Eglwyswrw dates from the medieval period, and is classified as a motte and bailey. It is one of over 32,000 scheduled monuments protected across the UK.
Castell Eglwyswrw 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 PE171.
Several scheduled monuments lie within 10 km, including Ty-Newydd Standing Stones (7.7 km), Waun Clyn-Coch Hut Group (7.7 km), Rhos Fach standing stone pair (7.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Eglwyswrw'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.
Castell Eglwyswrw stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.