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Castell Cwm Aran

Also known as, or recorded in historical documents as;
Cymaran; Cymaron; Gemaron; Camaron; Caperun; Cwm Avon; Cwm Aron; Kamhawn; Cans Castle; Cuthremion

In the community of Llanddewi Ystradenny.
In the historic county of Radnorshire.
Modern authority of Powys.
Preserved county of Powys.

OS Map Grid Reference: SO15277030
Latitude 52.32400° Longitude -3.24466°

Castell Cwm Aran has been described as a certain Timber Castle.

There are earthwork remains.

This site is a scheduled monument protected by law.


Castell Cwm Aran is a subrectangular motte, the summit c.38m by 20m, 15m high above the valley to the S and E, 9.5m high above a rock-cut ditch to the W and N, across which lies a rectilinear bailey, c.47m by 49-62m, also resting on steep slopes to the E, banked and ditched elsewhere, including towards the motte. There is a counterscarp to the W and indications of a further enclosure, c.20m deep, to the N. The whole work is c.150m by 100m overall. The castle was first mentioned in 1144-1195AD. (Coflein)

Roughly rectangular motte rising 9.5m above ditch on N and W and 15m above river flood plain in S and E. Rectangular bailey to N defended by rampart and outer ditch and additional scarping. Entrance to N. Scheduled area enlarged to enclose siegeworks to south 23/8/91. The earthworks are generally in very good condition with little or no damage by grazing animals. Small areas of woody scrub including small trees and gorse are beginning to rejuvenate some areas to the south and south-west have been burnt. (CPAT Tir Gofal assessment, 2004). (Clwyd Powys Archaeological Trust HER)

Possible founded during Mortimer conquest of area in 1093. Exchanged hands between Welsh and English several times until possibly finally destroyed by Llywelyn the Great in 1215. Remfry suggests this is the site of Cans Castle recorded in 1134.
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Sources of information, references and further reading
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This record last updated before 1 February 2016