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Cof Cymru: National Historic Assets of Wales · Wales

Llwyn Onn Isaf Farmhouse

Barmouth, Gwynedd, Wales

A Grade II listed building in Llwyn Onn, Barmouth, Gwynedd, designated on 28 August 1990.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Llwyn Onn Isaf Farmhouse, Barmouth, Gwynedd, 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
Domestic
Date of designation
28 August 1990
Locality
Llwyn Onn
Community
Barmouth
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.73967, -4.03047
Cadw reference
5226

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 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 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)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Situated on a hillside sloping down towards the mouth of the
Afon Dwynant. Approximately 3km NE of Barmouth, approached from a mountain road which continues from Panorama road; Llwyn Onn Isaf is reached along a descending lane, gated to the top. The farm

A late C17

Vernacular farmhouse of 2 storeys. Rubble construction with slate roof (currently being re-laid); end chimneys, that to L currently being rebuilt with weather coursing; gable parapets with kneelers. Broad 2-window front with central entrance and especially long quoin stones. Plinth partly of boulder type with slightly battered gable ends. The R windows are off-set; part-glazed door. The lintel is inscribed: `RW 1689 EH'. Small square stair light to upper L gable, and a window to R gable with, beneath a newly created entrance, formerly a 12-pane sash. 16-pane recessed sash to rear. Continuous with the L gable end is a lower, later rubble cross-range; at the junction a window opening, formerly a boarded door, below which there are steps to a cellar. Here a deeply-recessed boarded door. Drystone outshut at the far end.

The house was undergoing extensive restoration at the time of inspection (Autumn 1994).

L ground-floor room (former parlour) with stop-chamfered beamed ceiling; tongue stops. The end beam above a (plastered over) inglenook fireplace is carried on 3 rough stone corbels; later bread oven. The Hall (to R) has been sub-divided in the late C19 to create an entrance passage; evidence for a similar ceiling. Stopped-
chamfered main beams to upper floor; in the upper, front-facing room a wall cupboard with plain pegged oak doors and iron butterfly hinges. At the S gable end an original stone newel stair gives access from the first floor to the attic. 4-bay roof with original pegged collar trusses.

A dated example of a larger vernacular farmhouse of the late C17.

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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