Morganstown Motte

Has been described as a Certain Timber Castle (Ringwork)

There are earthwork remains

NameMorganstown Motte
Alternative NamesTongwynlais; Ty nant motte
Historic CountryGlamorgan
Modern AuthorityCardiff
1974 AuthoritySouth Glamorgan

A low-lying motte on an alluvial terrace near W bank of Taff is a flat-topped mound 30m in diameter at base, 13m at top, and 3.8m high, surrounded by a flat-bottomed ditch 7m wide and averaging 0.5m deep. An adjoining bailey of rectilinear form is vaguely outlined by scarps to the E of the motte. Some damage has been caused to the bailey by recent nearby developments. (Coflein)

A castle mound 38m in diameter and 5.5m high, in good condition, the top being flat and tree-covered. The surrounding ditch is 6.5m wide and water-filled. There are no traces of a bailey, and no signs of masonry. (Glamorgan-Gwent Archaeological Trust HER)

The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). A motte is a large conical or pyramidal mound of soil and/or stone, usually surrounded by either a wet or dry ditch, and surmounted by a tower constructed of timber or stone. The motte stands c. 4m high with steep sides and a flat top c. 14m in diameter. The ditch around the mound is variable: on the south side it is c. 6m wide with an outer bank c. 1m high and 2.5m wide; on the west side the ditch is the same; on the north and east sides there is no external bank. To the north-east of the mound, near the field boundary, there is a slight ditch and bank running north-south on slightly higher ground. The ditch is 3m wide and the bank is 0.7m high on the outer side of the ditch. (Scheduling Report)

Gatehouse Comments

Treeclad ringwork.

- Philip Davis

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 ReferenceST128818
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Copyright Dave Barlow of Abaroths World All Rights ReservedView full Sized Image
Copyright Dave Barlow of Abaroths World All Rights ReservedView full Sized Image
Copyright Dave Barlow of Abaroths World All Rights ReservedView full Sized Image

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  • Morgan, Gerald, 2008, Castles in Wales: A Handbook (Talybont: Y Lolfa Cyf.) p. 239 (listed)
  • Pettifer, Adrian, 2000, Welsh Castles, A Guide by Counties (Boydell Press) p. 111
  • < >RCAHMW, 1991, An Inventory of the Ancient Monuments in Glamorgan Vol. 3 Part 1a: The Early Castles (London: HMSO) < > MO3 p. 57-9
  • Salter, Mike, 1991, The Castles of Gwent, Glamorgan and Gower (Malvern) p. 75 (slight)
  • King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 1 p. 168
  • Hague, D.B., 1971, in Pugh, T.B. (ed), Glamorgan County History Vol. 3 The Middle Ages (Cardiff) p. 443
  • Randall, Henry John, 1961, The Vale of Glamorgan, Studies in Landscape and History (Newport: R.H.Johns Ltd) p. 77


  • 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