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Cof Cymru: National Historic Assets of Wales · Wales

Melin Frogwy

Llanddyfnan, Isle of Anglesey, Wales

A Grade II listed building in Bodfordd, Llanddyfnan, Isle of Anglesey, designated on 12 May 1970.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Melin Frogwy, Llanddyfnan, Isle of Anglesey, 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
Industrial
Date of designation
12 May 1970
Locality
Bodfordd
Community
Llanddyfnan
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.26882, -4.36038
Cadw reference
85291

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 1883 map "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 93 Holyhead (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

Set well back, along a trackway, from the N side of the High Street (B5109) in the village of Bodfordd.

Probably C19, built close to the site of an established watermill. The windmill appears to have been a short lived venture and had fallen into disuse by the beginning of the 1890s. William Roberts who farmed at nearby Gafrogwy Fawr and owned both wind and water mills at Frogwy, decided to convert the windmill tower into a dwelling, adding a single storey extension to serve as a kitchen.
The tower was renovated in the early months of 2002.

Full height windmill tower. Built of local rubble masonry. Modern slate roof; conical roof to tower. The doors and windows are modern in original openings.

Not inspected.

Listed as a good early C19 windmill tower, retaining the original planned form, openings and character, notwithstanding the new roof and modern lights. Frogwy mill is one of only 18 windmill towers surviving on Anglesey, out of over 40 that were operating in early-mid C19.

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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