Castell Glas
Has been described as a Certain Timber Castle (Motte), and also as a Certain Masonry Castle
There are earthwork remains
| Name | Castell Glas |
| Alternative Names | Greenfield; Green Castle; Maes Glas; Maesglas Castle; Maindy Hill Camp |
| Historic Country | Monmouthshire |
| Modern Authority | Newport |
| 1974 Authority | Gwent |
| Community | Gaer |
The castle mound at Castell Glas is flat-topped and trapezoidal, measuring overall 33m (north-east to southwest) by 25m on the north-east and 20m on the southwest. It has a maximum height of 1.8m on the SE but only 0.6m on the NW. The mound is turf-covered though probing suggests that it contains significant amounts of stone. It is now set in a children's playground. (Coflein)
The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). A motte is a large rectangular 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 earth mound is about 1.5m high and 35m by 25m in size. Little is known of its history, but it was sold in 1622 and by 1645 was said to have “disappeared”. In the later Middle Ages, the castle belonged to the Earls of Lancaster and when Coxe visited it in 1800. The remains included a range of medieval stone buildings such as, a square tower and a possible hall block with a “fine Gothic entrance”, a “large fireplace” and “several Gothic doors”. (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 Reference | ST302858 |
| Latitude | 51.5665016174316 |
| Longitude | -3.00865006446838 |
| Eastings | 330200 |
| Northings | 185800 |
