Ancient Monuments

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Llantwit Major Castle

A Scheduled Monument in Llantwit Major (Llanilltud Fawr), Vale of Glamorgan (Bro Morgannwg)

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Latitude: 51.411 / 51°24'39"N

Longitude: -3.4879 / 3°29'16"W

OS Eastings: 296612

OS Northings: 169047

OS Grid: SS966690

Mapcode National: GBR HJ.Q7CV

Mapcode Global: VH5HZ.HSFP

Entry Name: Llantwit Major Castle

Scheduled Date: 22 January 1937

Source: Cadw

Source ID: 990

Cadw Legacy ID: GM137

Schedule Class: Domestic

Category: Manor

Period: Medieval

County: Vale of Glamorgan (Bro Morgannwg)

Community: Llantwit Major (Llanilltud Fawr)

Built-Up Area: Llantwit Major

Traditional County: Glamorgan


The monument comprises the remains of medieval manor house. Llantwit Major castle stands on the western edge of Llantwit Major at the south end of a grass field. It is a large ruined mansion of three storeys, standing to 6 - 7m. It consists of a main hall block flanked by two cross wings (kitchen on the west, parlour on the east). On the north side is a square stair extension (on the west) and a two storey wing (on the east). The central block dates mainly from c. 1590 and the wings from c. 1600. The walls, which are in reasonable condition, are of uncoursed rubble limestone. On the north-east and south-east sides the walls are bare and appear in reasonable condition. On the south-west side the stone mullions survive in a blocked window. Everywhere else the windows and doors have lost their dressed stone and are ragged openings. Inside, the main hall quite a lot of plaster remains on the walls. There is fallen stone in all the rooms..

The monument is of national importance for its potential to enhance our knowledge of medieval secular architecture. The monument is a well-preserved example of its type and forms an important element within the wider medieval context. The structure itself may be expected to contain archaeological information in regard to chronology, building techniques and functional detail.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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