Monument to William Williams ('Caledfryn') is a Grade II listed building in the Caerphilly local planning authority area, Wales. First listed on 25 May 1999. Monument.

Monument to William Williams ('Caledfryn')

WRENN ID
sheer-transept-rye
Grade
II
Local Planning Authority
Caerphilly
Constituency
Caerphilly MP: Chris Evans (Lab)
Country
Wales
Date first listed
25 May 1999
Type
Monument
Address
Monument to William Williams ('Caledfryn'), Groeswen, Penyrheol, Trecenydd and Energlyn
OS grid reference
ST 127 869
Coordinates
51.57493, -3.26011
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is a short obelisk made of polished red Peterhead granite, dedicated to William Williams, known as 'Caledfryn'. It stands on a tall, stepped plinth that has buttresses on the sides and is topped with a pyramidal, corbelled cap stone. A bronze bust in relief is set into the front face of the obelisk. The base features an inscription that simply reads "CALEDFRYN." Additionally, there is an inscription on the side that commemorates Mary Williams, who lived from 1838 to 1919.

Local climate

Monument to William Williams ('Caledfryn') sits in a wetter-than-average part of the UK, with an average of 1,120 mm of rain a year. This makes it wetter than 88% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 85% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 53% of listed buildings. Of these, 14 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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