Gadlys, Llanilid

Has been described as a Rejected Timber Castle (Ringwork)

There are earthwork remains

NameGadlys, Llanilid
Alternative Names
Historic CountryGlamorgan
Modern AuthorityRhondda Cynon Taff
1974 AuthorityMid Glamorgan

An enclosure measuring 51.8m on the N, fronting a wet marshy area, 42.6m (W), 62.4m (S) and 50.2m (E). An internal scarp isolates the W third of the site connected with a now-vanished building. The entrance was just W of the SE angle. (Coflein)

Gadlys, listed under Medieval Moated Sites, is about 200 x 150ft. Much eroded, it has no known history. (Glamorgan-Gwent Archaeological Trust HER)

The monument comprises the remains of a well-preserved medieval moated homestead. This site may have been the administrative centre of the sublordship of Ruthin during the 13th century, possibly superseding the motte castle nearby (GM080). Its situation in low ground is a typical one for moated sites, and water could have been let into the moat from the boggy area to the north. All that remains of the site are low banks on the west, south and east sides of a roughly rectangular area. Slight vestiges of the moat which once surrounded it are visible on the west. (Scheduling Report)

Gatehouse Comments

Tentatively dated to 1245-1314. Spurgeon writes that Gadlys signifies military camp, castle bailey, or courtyard, and as late as 1951 the OS map designated it as a 'Roman Camp'. The site is probably the replacement to Llanilid castle but there is no evidence it was fortified.

- 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 ReferenceSS978811
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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

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  • RCAHMW, 1982, An Inventory of the Ancient Monuments in Glamorgan Vol. 3 Part 2: Secular Non-defensive Monuments (London: HMSO) MS5 p. 91-3


  • Spurgeon, C.J. with Roberts, D.J. and Thomas, H.J., 1999, 'Supposed Castles in Glamorgan; A review' Archaeology in Wales Vol. 39 27-40