Bwrdd y Tri Arglwydd is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 20 October 1966. Boundary stone.
Bwrdd y Tri Arglwydd
- WRENN ID
- small-rafter-sage
- Grade
- II
- Local Planning Authority
- Denbighshire
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 20 October 1966
- Type
- Boundary stone
- Address
- Bwrdd y Tri Arglwydd, Carrog, Corwen
- OS grid reference
- SJ 103 467
- Coordinates
- 53.01075, -3.33714
- Source
- Cadw listing
Description
Bwrdd y Tri Arglwydd is a boundary stone with a rough stone base approximately 1 metre high. On top of this base sits a smaller, roughly shaped stone that has the letter R inscribed in its west-facing angle. There is an inscription plate on the base that reads: "this ancient boundary stone marks the meeting point of four parishes and of the lordships of Ruthin, Glyndyfrdwy and Yale."
Local climate
Bwrdd y Tri Arglwydd sits in a wetter-than-average part of the UK, with an average of 980 mm of rain a year. This makes it wetter than 79% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 56% of listed buildings.
It experiences an average of 49 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 30 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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