Church of St Bleiddian is a Grade II* listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 28 January 1963. A Medieval Church.
Church of St Bleiddian
- WRENN ID
- north-rubble-blackthorn
- Grade
- II*
- Local Planning Authority
- Vale of Glamorgan
- Constituency
- Vale of Glamorgan MP: Kanishka Narayan (Lab)
- Country
- Wales
- Date first listed
- 28 January 1963
- Type
- Church
- Period
- Medieval
- Address
- Church of St Bleiddian, St Lythans, Wenvoe
- OS grid reference
- ST 110 729
- Coordinates
- 51.44826, -3.28171
- Source
- Cadw listing
Description
This is a medieval church. The building comprises a west tower, a slightly wider nave, a south porch, a narrower chancel, and a large south chapel. It is constructed of rubble with ashlar dressings, and has a slate roof with coping, corbels, kneelers, and cruciform finials.
The west tower is slightly battered and has a steep-pitched saddleback roof supported by corbels, with apex lights. It features paired, louvred belfry openings with cusped tracery, dating to the 19th century, which are more elaborate to the west. Rectangular slit lights are located below to the north and south. The south porch has a plain, chamfered, pointed arched doorway, and its interior has a renewed barrel roof, stone seats, and a flag floor. The main south doorway to the nave has a deep, hollow chamfer with stops. The south nave has a trefoil-headed single light window west of the porch, paired cinquefoil-headed lights under a hood to the east of the porch, and a blocked rectangular rood light opening under the eaves. The south chapel has a separate pitched roof. Its south doorway has a wide Tudor arch with "RB" carved into the spandrels, a moulded surround with a high stop, a relieving arch above, and a blocked rectangular opening at the apex. The south elevation of the chapel has windows with trefoil-headed lights under hoodmoulds, one single and one paired. There are two corbels carved with grotesques. The east gable end is shared with the chancel; the three-light east chapel window has Perpendicular tracery set within a rectangular frame. The chancel’s east window is of three lights, pointed arched with reticulated tracery, a hoodmould, and foliage stops. There are no windows to the north chancel. The north nave has one ogee-shaped single light window at the northeast, and double ogee-shaped lights with quatrefoil tracery, a hoodmould, and foliage stops at the northwest.
The interior has rendered walls with exposed dressings. It features an arch-braced roof in four bays with a lower ridge piece, a single row of purlins, and a boarded ceiling. Some timbers may be original and were restored in the 19th century. The chancel has a canted boarded ceiling with a grid of moulded ribs and heraldic bosses at the intersections. A notable deep Norman font is engraved with a chevron pattern, and it is accompanied by an unusual font cover carved with vine and grapes, and a cruciform metal fitting with a ring. The nave has oil lamps converted to electricity. The pulpit, altar, and altar rails were created by Prichard and Seddon. The nave has a parquet floor while the chancel has a flag floor, and there are no stalls. A small, blocked rectangular window is located at the southeast nave to light a former rood. The chancel arch is a completely plain pointed arch. Three steps lead up to the sanctuary, with a niche to the left of the altar and a corbel to the right. There are some small wall monuments throughout the interior. The most striking feature is the arrangement of bulbous piers, one detached and one attached at each side, with flattened segmental arches, which were created when the chancel south wall was breached by the addition of the Button chapel. The Button chapel has an internal Tudor arch similar to the external doorway, a flag floor, and no furnishings.
Local climate
Church of St Bleiddian sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 17 freeze-thaw cycles a year, fewer than 83% of listed buildings. Of these, 6 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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