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Colwyn Castle

Also known as, or recorded in historical documents as;
Mauds Castle; Mawds; Colunwy; Clun

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

OS Map Grid Reference: SO10765399
Latitude 52.17697° Longitude -3.30646°

Colwyn Castle has been described as a certain Timber Castle, and also as a certain Masonry Castle.

There are earthwork remains.

This site is a scheduled monument protected by law.


Colwyn Castle is mentioned in documentary sources in 1144 (and possibly again in 1315) and partly overlies the site of a Roman fort (NPRN 401567). The surviving remains include a ditched and counterscarped circular enclosure, c.65m in diameter set within, and at the junction of, two contiguous subrectangular ditched and banked enclosures approximately 280m by 160m. The castle is thought to have been reconstructed in stone in about 1240 and to have been demolished in 1629. (Coflein)

The new fortress was probably begun around 1200 when William Braose was granted rights of conquest in this district and was consequently probably seized from him on his rebellion in 1208. On his sons' subsequent rebellion in 1215 Colwyn was one of King John's castles which were left for Gwallter ab Einion Clud to take on behalf of his Braose allies. The castle seems to have remained in Welsh hands throughout the rule of Llywelyn ab Iorwerth, the truce brokers from England and Wales meeting there to discuss the state of the borders in 1232. On Llywelyn's death the local princes seem to have managed to transfer their allegiance easily to that of King Henry III and to have remained in possession of the castle site. (Remfry)

No stonework remains in situ.
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This record last updated before 1 February 2016