© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Castell-Du is a medieval motte-and-bailey castle situated near Sennybridge in Breconshire, Wales, constructed during the Norman period following the Anglo-Norman advance into South Wales. The monument comprises a substantial earthen motte with an adjoining bailey, representing a typical form of early medieval fortification employed to secure territorial gains and control local populations. The castle's strategic position within the Brecon Beacons region reflects its role in the wider Norman military campaign and settlement of Wales during the eleventh and twelfth centuries. Though the castle appears not to have developed into a stone fortress and was eventually abandoned, its earthwork remains provide important archaeological evidence of Norman military strategy and settlement patterns in medieval Wales.
Castell-Du, Sennybridge is a scheduled monument protected by Cadw under reference BR126. View the official record →
Castell-Du is a medieval motte-and-bailey castle situated near Sennybridge in Breconshire, Wales, constructed during the Norman period following the Anglo-Norman advance into South Wales. It is designated a Scheduled Ancient Monument by Cadw under reference BR126.
Castell-Du, Sennybridge dates from the medieval period, and is classified as a castle. It is one of over 32,000 scheduled monuments protected across the UK.
Castell-Du, Sennybridge 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 BR126.
Several scheduled monuments lie within 10 km, including Craig Cerrig-Gleisiad Prehistoric Settlement (7.6 km), Pont Gihirych (8 km), Blaen Glyn Round Cairn (8.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell-Du, Sennybridge'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-Du, Sennybridge stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.