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Cof Cymru: National Historic Assets of Wales · Wales

Cymmer Castle

Llanelltyd, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Defence
Date of designation
17 June 1966
Locality
Cymmer Castle
Community
Llanelltyd
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.75854, -3.88082
Cadw reference
4742

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "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).

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This record in Cadw's own full report ↗

Cadw's description

Situated on a hill 2.5 km N of Dolgellau with commanding views towards Cader Idris and the Mawddach estuary; accessed across fields from a metalled lane leading E from Llanelltyd bridge ultimately to Llanfachreth; on a small artificial motte.

The probable site of Cymer castle, which was built in 1116 by Uchdryd ap Edwin; this is the first recorded mention of a Welsh castle which has survived to the present day. The present building occupies a 4.5m high motte, the summit of which has a diameter of 13m. It is possible that it originated as a hunting lodge or observation platform for the later abbots of Cymer in whose former deer park it stands; apparently used in the C18 as a clandestine gaming house, it has long been ruinous.

Rubble-built gabled tower block originally of one-and-a-half storeys over a raised basement; squat chimney to N gable with weather-coursing. The N and E sides stand almost to full height, the remainder being ruinous. The N and S gables originally had a single large window opening to the main floor; the E and W sides had 2 such windows, the upper contained within a gabled dormer. There is a small angled fireplace in the NE cornerand what may have been a stair access in the SE corner. Decayed oak lintels survive to some openings including 2 basement lights. There is evidence for both interior and exterior render.

Scheduled Ancient Monument ME 150.

An imposing ruin on an important site, perhaps originally an early C16 lodge associated with Cymer abbey.

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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