Twyn Tudur, Mynddislwyn

Has been described as a Certain Timber Castle (Motte)

There are earthwork remains

NameTwyn Tudur, Mynddislwyn
Alternative NamesTwyn Tudor
Historic CountryMonmouthshire
Modern AuthorityCaerphilly
1974 AuthorityMid Glamorgan

Ditched sub-circular mound, c.30m in diameter and 6.0m high, having traces of a bank about its summit. (Coflein)

Motte with surrounding ditch. W.side of ditch & NW quadrant of mound have been damaged. Top has been dug into & upon it are remains of an earth & stone bank. (Glamorgan-Gwent Archaeological Trust HER)

The monument comprises the remains of a motte and bailey castle, a military stronghold built during the medieval period. Twyn Tudor stands on level ground to the S of St Tudur's church. It is a large and steep sided mound, 12m high with a slightly dished summit 14m in diameter. A shallow ditch surrounds the S, N and E sides, this is 5m wide and 1.5m deep, becoming 0.6m deep on the N side. The ditch is not discernible on the W side. There is no bailey evident. (Scheduling Report)

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 ReferenceST193938
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  • Morgan, Gerald, 2008, Castles in Wales: A Handbook (Talybont: Y Lolfa Cyf.) p. 244 (listed)
  • Pettifer, Adrian, 2000, Welsh Castles, A Guide by Counties (Boydell Press) p. 146
  • Salter, Mike, 1991, The Castles of Gwent, Glamorgan and Gower (Malvern) p. 74 (slight)
  • King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 1 p. 286
  • 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)


  • 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