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Castell Dinefwr is a medieval castle occupying a prominent hilltop position near Llandeilo in Carmarthenshire, Wales. The site was a seat of the princes of Deheubarth from at least the twelfth century, with the surviving stone structures primarily dating from the thirteenth century when it served as a stronghold of the Welsh princely house. The castle comprises a substantial round tower or keep, defensive walls, and associated earthwork defences characteristic of Welsh medieval fortifications. Dinefwr represents an important example of princely rather than Norman baronial castle architecture and remains one of the most significant medieval sites in South Wales, designated as a scheduled ancient monument under the Cadw management system.
Castell Dinefwr is a scheduled monument protected by Cadw under reference CM029. View the official record →
Castell Dinefwr is a medieval castle occupying a prominent hilltop position near Llandeilo in Carmarthenshire, Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CM029.
Castell Dinefwr 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 Dinefwr 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 CM029.
Several scheduled monuments lie within 10 km, including Two Burnt Mounds 600m ESE of Rhyd-y-Ffynnon Farm (3.2 km), Cincoed Limestone Quarries and Kilns (5.3 km), Limekilns East of Cincoed (5.4 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Dinefwr'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 Dinefwr stands on Llanvirn Rocks (Undifferentiated), bedrock that formed in the Whiterock. The rock here is mudstone, siltstone and sandstone.