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Latitude: 51.4075 / 51°24'27"N
Longitude: -3.4885 / 3°29'18"W
OS Eastings: 296564
OS Northings: 168661
OS Grid: SS965686
Mapcode National: GBR HJ.QF7L
Mapcode Global: VH5HZ.HW3C
Plus Code: 9C3RCG56+2H
Entry Name: The Gatehouse (Porter's Room)
Listing Date: 22 February 1963
Last Amended: 16 December 2004
Source ID: 13254
Building Class: Domestic
Location: About 80m south-west of the Church of St. Illtud. The building is on the roadside and is sited near the south-east corner of the 'Monastery' field.
County: Vale of Glamorgan
Community: Llantwit Major (Llanilltud Fawr)
Community: Llantwit Major
Built-Up Area: Llantwit Major
Traditional County: Glamorgan
C13 gatehouse to the former monastic grange of Tewkesbury Abbey at Llantwit Major. It appears to have been adapted as a house and for agricultural use at different times. It was apparently a house until c1880 and was a Parish Room in 1906 (Rodger).
Two storey rectangular structure with squared limestone walls, and a steeply pitched Welsh slate roof with coped verges, which has a chimney to the north-east. Blocked opposing 2-centred archways each about 2m wide in the south-east and north-west elevations, with flanking narrower doorways each about 1m wide, that in the south-east elevation is still in use.
South-east elevation ground floor with ventilator slit to left hand, wide doorway to right hand of centre and single door to right hand again. Upper floor of south-east elevation with a single-light oblong window with chamfered jambs and a central gabled dormer with trefoiled light; this is in the same plane as the wall. A modern window has been inserted over the crown of the blocked archway.
Similar oblong window to upper floor in north-east gable. Against the south-west gable, an external flight of stone steps leads to a doorway with triangular stone head, sheltered by a gabled porch of stone with slate roof; projecting masonry bonds at south-west end.
The north-west elevation has two small square lights and a larger taking-in door inserted between them on the upper floor.
Interior not available at resurvey, but it is said to have a modern wooden board and joist ceiling to the ground floor.
Included and highly graded as an important and very complete survival of a key part of an early medieval monastic grange.
Scheduled Ancient Monument No. 141 (GLA).
Other nearby listed buildings