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Castell Gwynionydd is a medieval ringwork situated in Wales and protected by Cadw as a scheduled monument under reference CD018. The site occupies ground underlain by Ashgill Rocks of undifferentiated character, a geological formation of mudstone, siltstone and sandstone that would have presented a reasonably firm foundation for medieval earthwork construction.
Ringworks are modest fortified settlements, typically comprising a single defensive bank and ditch enclosing a roughly circular or oval area. They served as residences for lesser Welsh nobility and English settlers during the medieval period, particularly from the eleventh century onward. Castell Gwynionydd exemplifies this form of local stronghold, designed to provide both domestic accommodation and a defensible refuge for its occupants and their immediate retinues.
The monument survives as an earthwork and remains an important record of medieval settlement patterns and territorial control in Wales. Its preservation as a scheduled monument ensures that the physical evidence of this medieval stronghold is protected for future study and interpretation, contributing to our understanding of the medieval Welsh landscape and the varied forms of fortification employed across the period.
Castell Gwynionydd is a scheduled monument protected by Cadw under reference CD018. View the official record →
Castell Gwynionydd is a medieval ringwork situated in Wales and protected by Cadw as a scheduled monument under reference CD018.
Castell Gwynionydd dates from the medieval period, and is classified as a ringwork. It is one of over 32,000 scheduled monuments protected across the UK.
Castell Gwynionydd 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 CD018.
Several scheduled monuments lie within 10 km, including Castell Du Castle Mound (8.1 km), Carn Wen Round Barrow (8.4 km), Gareg Hir Standing Stone (8.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Gwynionydd'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 Gwynionydd stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.