Castell Crwn (The Gatehouse Record)

Castell Crwn

Also known as, or recorded in historical documents as;
Llanrhwdrys; Castell Rhonyn

In the community of Cylch-y-Garn.
In the historic county of Anglesey.
Modern authority of Anglesey.
Preserved county of Gwynedd.

OS Map Grid Reference: SH33199083
Latitude 53.38789° Longitude -4.50980°

Castell Crwn has been described as a probable Timber Castle.

There are earthwork remains.

This site is a scheduled monument protected by law.

Description

An oval earthwork enclosure set on low lying ground. Possibly a medieval castle, although it could be a prehistoric settlement enclosure. The enclosure is about 27m north-south by 22m. It is enclosed by a rampart and ditch with a counterscarp remaining on the north-west. There is an east-facing entrance gap. The 4.0-5.0m wide ditch may originally have been a water filled moat. (Coflein–John Wiles 13.08.07)

The monument comprises the remains of a circular earthwork comprising a bank, external ditch and remains of counterscarp bank, with an internal diameter of 24 -25 m. It is situated in a slight depression 20 m E of a small stream flowing N to the sea. The defences are best preserved on the W side, where there is an outer bank 0.3-0.5 m high, a fall to the bottom of the ditch of about 1 m and then a climb of 2 m to the top of the internal bank. The internal bank lies between 0.75 and 1.5 m above the level of the interior. The ditch has been filled in on the E and NE sides, but is still just visible. It is possible that the ditch was filled with water from the adjacent stream. A modern field bank cuts through the S part of the site, causing some damage to the banks. The site is generally better preserved S of this wall, although parts of it are very overgrown with thorn and bramble. A 2 m gap in the interior bank on the E side may represent the original entrance. A shallow gully, possibly a modern drain, runs from the N side of the site. The remains of a bank can be seen in the undergrowth S of the field wall and 10 m W of the outer bank. Its purpose or extent could not be determined. (Scheduling Report)

Sources of information, references and further reading

The CADW scheduled monument record number is AN029.
The National Monument Record (Coflein) number(s) for this site is/are 95544.
The County Historic Environment Record (formerly Sites and Monuments Record) number(s) for this site is/are 3515.

Books
- Morgan, Gerald, 2008, Castles in Wales: A Handbook (Talybont: Y Lolfa Cyf.) p. 251 (listed as possible)
  Salter, Mike, 1997, The Castles of North Wales (Malvern) p. 49 (slight)
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 1 p. 3
  RCAHMW, 1937, An inventory of the ancient monuments in Anglesey (HMSO) p. 108-9 no. 2 online copy
Periodical Articles
- Hogg, A.H.A. and King, D.J.C., 1963, 'Early castles in Wales and the Marches: a preliminary list' Archaeologia Cambrensis Vol. 112 p. 77-124 (possible)

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The information on this web page may be derived from information compiled by and/or copyright of the Royal Commission on the Ancient and Historic Monuments of Wales, the four welsh archaeological trusts and other individuals and organisations. It may also contain Designated Historic Asset Descriptive Information from The Welsh Historic Environment Service (Cadw), licensed under the Open Government Licence. All the sources given should be consulted to identify the original copyright holder and permission obtained from them before use of the information on this site for commercial purposes.
The author and compiler of Gatehouse does not receive any income from the site and funds it himself. The information within this site is provided freely for educational purposes only.

The bibliography owes much to various bibliographies produced by John Kenyon for the Council for British Archaeology, the Castle Studies Group and others.

Suggestions for finding online and/or hard copies of bibliographical sources can be seen at this link.
Minor archaeological investigations, such as watching brief reports, and some other 'grey' literature is most likely to be held by H.E.R.s but is often poorly referenced and is unlikely to be recorded here, or elsewhere, but some suggestions can be found here.

The possible site or monument is represented on maps as a point location. This is a guide only. It should be noted that OS grid references defines an area, not a point location. In practice this means the actual center of the site or monument may often, but not always, be to the North East of the point shown.
Locations derived from OS grid references and from latitude longitiude may differ by a small distance.
Further information on mapping and location can be seen at this link.

Lidar coverage in the UK is not complete. The button above will give an idea of the area of coverage. Higher resolution lidar images in both DSM and DTM form may be available from Lle A geo-Portal for Wales (click the preview tag to bring up a map and then select format byclicking on the small blue diamond in the top right corner of the map.)

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This record last updated 05/07/2016 10:41:13

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