Church of St Tecwyn is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 30 December 2004. Church.
Church of St Tecwyn
- WRENN ID
- muffled-plinth-tarn
- Grade
- II
- Local Planning Authority
- Snowdonia National Park
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 30 December 2004
- Type
- Church
- Address
- Church of St Tecwyn, Llandecwyn, Talsarnau, Gwynedd
- OS grid reference
- SH 632 376
- Coordinates
- 52.9186, -4.03572
- Source
- Cadw listing
Description
The Church of St Tecwyn is a rural parish church featuring a continuous nave and chancel, along with a southwest porch. It is designed in a simple early Gothic style and constructed from coursed, mortared rubble masonry, with a plinth course and freestone dressings. The slate roof has a decorative tiled ridge and a single west bellcote. The church consists of five bays, each defined by a stepped raking buttress and a pointed arched window. A similar window is located in the west gable, while the east gable features a narrow trefoil-headed light with a round-headed recess at the apex. The southwest porch has a pointed arched entrance.
Inside, the church has a straightforward design with a roof of five bays supported by exposed, chamfered, arch-braced trusses that extend down to wallposts on shaped corbels. The chancel is raised by a single step, with the sanctuary elevated further by another step. On the north wall of the chancel, there is an inscribed stone believed to date from the 11th century, discovered during the church's rebuilding. This stone features a crudely carved cross and an inscription that reads:
Scti Tetquini Pr[esbyter]i h[o]ri Dei claris [imi] q[ue] Dei s[e]roi Heli diaco[n]i me fecit + a. b. c. d. e. f. +
This translates to: [the Cross of] St. Tecwyn, presbyter, to the honour of God and the most illustrious servant of God, Heli, deacon, made me. (the last word may read 'merci').
On the south wall of the chancel, there is an arched recess that contains a stone tablet commemorating Iohn Owen, son of Owen Iohn of Caerwych, who died in 1766.
Local climate
Church of St Tecwyn sits in one of the wettest parts of the UK, with an average of 1,450 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 36 freeze-thaw cycles a year, more than 60% of listed buildings. Of these, 18 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.
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- Detailed attributes — period, style, materials, features
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