Two Trethewy Monuments in Churchyard, Approximately 5 Metres South of Tower, Church of St Hermes is a Grade II listed building in the Cornwall local planning authority area, England. First listed on 16 November 1988. Chest tomb.

Two Trethewy Monuments in Churchyard, Approximately 5 Metres South of Tower, Church of St Hermes

WRENN ID
former-hinge-dale
Grade
II
Local Planning Authority
Cornwall
Constituency
Truro and Falmouth MP: Jayne Kirkham (Lab)
Country
England
Date first listed
16 November 1988
Type
Chest tomb
OS grid reference
SW 846 498
Coordinates
50.3092, -5.02615
Source
Historic England listing

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

Description

There are two chest tombs located in the churchyard, approximately 5 meters south of the tower of the Church of St. Hermes. These tombs date from the late 18th century to the early 19th century and are made of Delabole slate ledger slabs raised on simple brick and stone plinths. The northern tomb is dedicated to Anthony Trethewy, who died in 1799, his wife who died in 1805, their son Anthony who died in 1801, and their daughter Amy who died in 1804. The southern tomb is for Catherine Trethewy, who died in 1792. These monuments are noted as excellent examples of slate carving from that period.

Local climate

Two Trethewy Monuments in Churchyard, Approximately 5 Metres South of Tower, Church of St Hermes receives an average of 890 mm of rain a year. This makes it wetter than 65% 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 7 freeze-thaw cycles a year, fewer than 95% of listed buildings. Of these, 3 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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