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Castell Dryslwyn is a medieval castle situated on a prominent hilltop in the Towy Valley near Llandeilo in Carmarthenshire, Wales. Built in the thirteenth century, the castle served as a stronghold of the native Welsh princes of Deheubarth before passing into English hands following Edward I's conquest of Wales in the late thirteenth century. The remains comprise a substantial stone keep with surrounding defensive walls, reflecting the strategic importance of this position controlling the river crossing and valley approaches. The castle was largely destroyed during the Glyndŵr Rebellion in the early fifteenth century and subsequently fell into ruin, though its commanding location and structural remains demonstrate the sophistication of medieval Welsh military architecture.
Castell Dryslwyn is a scheduled monument protected by Cadw under reference CM030. View the official record →
Castell Dryslwyn is a medieval castle situated on a prominent hilltop in the Towy Valley near Llandeilo in Carmarthenshire, Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CM030.
Castell Dryslwyn 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 Dryslwyn 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 CM030.
Several scheduled monuments lie within 10 km, including Grongaer (2.3 km), Pen y Garn Camp (2.6 km), Pen y Cnap Castle (3.9 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Dryslwyn'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 Dryslwyn stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.