Castell Gwyddgrug

Has been described as a Questionable Timber Castle (Motte)

There are cropmark/slight earthwork remains

NameCastell Gwyddgrug
Alternative NamesGwyddgwg; Guiddgrug
Historic CountryCarmarthenshire
Modern AuthorityCarmarthenshire
1974 AuthorityDyfed
CommunityLlanfihangel Ar Arth

Earthworks representing a much mutilated & abused medieval motte & bailey castle, occupying a pronounced south-east facing spur: the remains of the motte, largely removed by 1976, are currently about 34m in diameter & up to 3.4m high; OS County series (Carmarthen. XV.13 1889) depicts the mound, previously some 4.5m high, as having a rather rounded triangular summit area, about 25m north-west to south-east by 20m; traces of ditching have been observed about the motte, which occupies the southern end of a subrectangular scarped enclosure, some 88m north-east to south-west by 55m; this enclosure circuit is rounded about the motte, suggesting a counterscarp, there being space for a near rectangular bailey, some 40m by 30m, facing rising ground to the north-east: it may be presumed that the castle was abandoned by the time that Gwyddgrug became a grange of Talley Abbey. (Coflein)

Nothing much now remains of this motte and bailey castle, as much of the site has been robbed for gravel, for farm track repairs. (Dyfed Archaeological Trust HER)

Gatehouse Comments

Davis is doubtful about this site.

- Philip Davis

Not scheduled

Not Listed

The National Monument Record (Coflein) number(s)
County Historic Environment Record
OS Map Grid ReferenceSN476356
HyperLink HyperLink HyperLink

No photos available. If you can provide pictures please contact Castlefacts

Most of the sites or buildings recorded in this web site are NOT open to the public and permission to visit a site must always be sought from the landowner or tenant.

Calculate Print


  • Morgan, Gerald, 2008, Castles in Wales: A Handbook (Talybont: Y Lolfa Cyf.) p. 236 (listed)
  • Davis, Paul, 2000, A Company of Forts. A Guide to the Medieval Castles of West Wales (Gomer Press) p. 34
  • Salter, Mike, 1996, The Castles of South West Wales (Malvern) p. 46 (slight)
  • King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 1 p. 57 Vol. 2 p. 563
  • Rees, Wm, 1932, Map of South Wales and the Border in the 14th century (Ordnance Survey) (A handbook to the map was published in 1933)
  • RCAHMW, 1917, An inventory of the Ancient Monuments of Carmarthenshire (HMSO) p. 134 no. 399 online copy


  • 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