Tomenseba, Llangeler

Has been described as a Certain Timber Castle (Motte), and also as a Certain Masonry Castle

There are earthwork remains

NameTomenseba, Llangeler
Alternative NamesDomen Seba, Bwlch y Domen; y Domen Fawr; Tomen Soba; Penboyr; y Tomen Fawr
Historic CountryCarmarthenshire
Modern AuthorityCarmarthenshire
1974 AuthorityDyfed

Thought to be a medieval castle motte: a steep-sided, ditched circular mound, some 32m in diameter & rising 6.4m to a level summit, some 12.5m in diameter, where foundations are said to have been encountered; the ditch is is partially water-filled: there are no indications of any further works. (Coflein)

Tomen Seba Motte is in a good state of preservation. It stands 30feet high from the bottom of the ditch to the top of the mound. There is a slight depression in the top of the mound and the mound is surrounded by a water-filled ditch about 20 feet wide. The mound stands in a field used for pasture and is itself covered with bracken and small trees. (Dyfed Archaeological Trust HER)

This site is a scheduled monument protected by law

Not Listed

The National Monument Record (Coflein) number(s)
County Historic Environment Record
OS Map Grid ReferenceSN325370
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  • 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. 41
  • 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. 59
  • RCAHMW, 1917, An inventory of the Ancient Monuments of Carmarthenshire (HMSO) p. 226 no. 664 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