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Castell Hywel is a medieval motte located in Wales and protected by Cadw under reference CD084. The monument sits upon bedrock of Ashgill Rocks, composed of mudstone, siltstone and sandstone deposited during the Ashgill period of the Ordovician era. This underlying geology has shaped both the physical character of the site and the methods available to its medieval builders.
The motte itself represents a characteristic form of Norman and early medieval fortification, comprising an artificial or enlarged earthen mound designed to dominate the surrounding landscape. The substantial earthwork would have originally supported a timber or stone superstructure, typically a keep or defensive tower, providing both refuge and a commanding vantage point over the local territory. Such structures became widespread across Wales following Norman incursions in the eleventh and twelfth centuries.
The site's position within the Welsh landscape reflects its strategic importance during the period of contested control between Norman lords and Welsh princes. Today, the monument survives as an earthwork that demonstrates the military engineering traditions of medieval Britain, with its form and setting still legible in the modern landscape.
Castell Hywel is a scheduled monument protected by Cadw under reference CD084. View the official record →
Castell Hywel is a medieval motte located in Wales and protected by Cadw under reference CD084.
Castell Hywel dates from the medieval period, and is classified as a motte. It is one of over 32,000 scheduled monuments protected across the UK.
Castell Hywel 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 CD084.
Several scheduled monuments lie within 10 km, including Tomen Rhyd-Owen (2.9 km), Pen Coed-Foel Camp (5.1 km), Dinas Cerdin (5.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Hywel'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 Hywel stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.