The Glamorgan-Gwent Archaeological Trust
Historic Environment Record

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Primary Reference Number (PRN) : 00115g
Trust : Glamorgan Gwent
Community : Risca
Unitary authority : Caerphilly
NGR : ST24389266
Site Type (preferred type first) : Medieval Motte
Status : Scheduled Monument

Summary :
Just to W.of mound & ditch lies a small turf-covered cairn (116G) 0.8m high with a hollowed middle. It is eroded on E.side which is near the top of the rock-cut ditch.

Description :
Just to W.of mound & ditch lies a small turf-covered cairn (116G) 0.8m high with a hollowed middle. It is eroded on E.side which is near the top of the rock-cut ditch.

Phillips notes that this site is very inaccessible, and that although it is situated to the east of a large oval Iron Age enclosure, it is most likely not included as one combined site as it would require a vast amount of man power to defend due to the extremely large size of the area. He categorises the site as an early watch-tower motte without a bailey, and surmises that the limit of the Norman influence would have been confined to the eastern end of the site. It is also noted that the site has been severely modified by the council and Cadw, and that although the motte is surrounded by a rock cut ditch to the south, west and north, the ditch cuts the Iron Age ramparts with a berm added. No documentary evidence for Twmbarlwm is currently known, and it is also stated that it has not always been classified either as a hill-fort or as a motte. Phillips discusses the fact that Coxe (1801) thinks that the site might mark a grave, and that Knight questions the Iron Age date suggesting that the motte was an unfinished de Clare castle (Phillips 2004).

Sources :
, Archwilio App Submission
Phillips, N. , 2004 , Thesis: Earthwork Castles of Gwent and Ergyng AD 1050 – 1250
Taylor, B , 2014 , Digital photograph (1); Twm Barlwm
08/PM Map//Rees W/1932/S.Wales & Border in 14th C/SE Sheet
02/PM Desc Text//Savory HN/1948-50/BBCS/V13.Pt9.p234
06/PM Desc Text//Pugh RH/1934/Glimpses of W.Gwent/pp11-13
04/PH Desc Text//Coxe W/1801/Hist Tour in Monm./p75 plan
07/PH Desc Text//Pinnock/1825/Hist & Topog of Eng & Wales/Vol4 p25
01/MM Record Card/OS//1957/ST 29 SW 1/
03/PM Desc Text//Nash Williams VE/1933/Arch Camb/V88.p392
09/PM Desc Text//Pickford JAF/1946/Between Mountain & Marsh/p50
05/PH Desc Text///1885/Monm&Caerl.Ant Soc/Papers re Hist of Mon p68
10/MM Desc Text/CADW/Whittle E./1987
11/MM Desc Text/CADW/1991/AM107

Events :
E004063 : Earthwork Castles of Gwent and Ergyng AD 1050 – 1250 (year : 2004)
E002383 : Uplands Survey Mynydd Maen and Mynydd Henllys, Gwent SUR (year : 1997)

Related PRNs : 116G

Compiled date : 28-01-1988

Images :

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