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Cof Cymru: National Historic Assets of Wales · Wales

St Issui's Well

The Vale of Grwyney, Powys, Wales

A Grade II listed building in Partrishow, The Vale of Grwyney, Powys, designated on 19 July 1963.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of St Issui's Well, The Vale of Grwyney, Powys, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Religious, Ritual and Funerary
Date of designation
19 July 1963
Locality
Partrishow
Community
The Vale of Grwyney
Unitary authority
Powys
Country
Wales
Coordinates
51.89571, -3.05003
Cadw reference
6689

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1636 map "Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ..." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1856 · 42. Brecon. (David Rumsey Map Collection, Stanford Libraries)
  • 1895 · Sheet 11. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · 214 Talgarth (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 14. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

On E side of minor road and on N bank of river in a dingle SW of parish church.

Probably the site of a pre Christian shrine which influenced the siting of the church here. It is traditionally associated with Issui, who was said to have had a cell nearby and who was canonised after his murder by a traveller. The water was also said to possess healing properties and to have attracted pilgrims. The present structure is probably a C18 or C19 rebuild.

Consisting of a shallow spring feeding a pool, with rubble stone walls on N, W and E sides. The wall on E side is integral with a field wall, the walls on N and W sides are built into a bank. In the N wall is a plain niche and an opening at the base where water flows into the small pool. A stone slab canopy covers the pool. The E and W walls also enclose flagstones on the S side.

Included for its historical associations with Partrishow and the early Celtic Church.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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