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Latitude: 52.9618 / 52°57'42"N
Longitude: -3.1557 / 3°9'20"W
OS Eastings: 322466
OS Northings: 341114
OS Grid: SJ224411
Mapcode National: GBR 6Z.KFXV
Mapcode Global: WH784.HTH9
Plus Code: 9C4RXR6V+PP
Entry Name: T-Shaped Range to rear of Pengwern Hall (including Vaulted Undercroft)
Listing Date: 24 April 1951
Last Amended: 22 December 1989
Grade: II*
Source: Cadw
Source ID: 1256
Building Class: Domestic
ID on this website: 300001256
Location: Attached at right angles to rear of Pengwern Hall at SW end; reached up a track N off the lane through Pengwern Vale, SE of Llangollen.
County: Denbighshire
Community: Llangollen
Community: Llangollen
Locality: Pengwern Vale
Built-Up Area: Llangollen
Traditional County: Denbighshire
Tagged with: Building
Pengwern was an important early-medieval settlement home of the ancestors of the house of Mostyn since well before C11. Rhys Sais, who died in 1073, owned this district of Nanheudwy; Lord Iorwerth of Pengwern, born ca 1170, was Seneschal to Prince Madog founder of Valle Crucis Abbey and Bishop Trevor II was of this family. By the earlier C15 a settlement at Mostyn had become the family's main residence, however, Pengwern remained in their ownership until ca 1850. Local tradition is that Pengwern was a convent and a grange of Valle Crucis Abbey, however this is not documented. The surviving and in-situ medieval architectural features date from the period when it was the family's principal residence. Approximately a century lies between the move to Mostyn and the dissolution of the Monasteries in 1536 but nevertheless it remained a family home and despite a modest revival it is not a period when one would expect the Abbey to be taking on new estates.
2-storeys. Comprises a short medieval C13/C14 cross range (containing the undercroft) linking the main house with its parallel agricultural range which is probably C17. It is conceivable that the medieval part was built by Lord Iorwerth of Pengwern when he was Seneschal to Prince Madog (ruler of northern Powys) in early C13; later alterations probably contemporary with the C17 building. The agricultural range is distinctive for the reused Gothic feature, presumably from Valle Crucis Abbey and probably inserted contemporary with the ca 1770 remodelling by Sir Roger Mostyn.
Rubble construction with undulating slate roofs. Red brick chimney stack to the medieval part; some of the NW side of which is concealed by the kitchen range of the house. Brick stairs with stone treads rises to boarded door with chamfered freestone surround. The SE side overlooking the garden has 2-narrow splayed openings and a larger one (former doorway) with inserted brick buttress to right; staircase removed. Small casement window below to left. At right angles is the agricultural range; the garden facing front of which has freestone surrounds to all windows; that to 1st floor is sub-medieval with mullions removed. The gable end with stone parapet has had a C14 3-light window inserted over a smaller opening; cusped ogee lights and one mullion partly replaced in timber. One stone to right is intailled R C D. At the other side of the cross range there is a 2-bay rubble front with diamond shaped ventilators and brick cambered arches to stable doorways and window. The rear elevation has a cusped lancet window beside a 1st floor boarded door; further to NW is a 2-light sub-medieval window with mullion removed. Later brick openings below. Long barn range stepped down to NW. Stone gate piers at SE corner.
Within the cross range is the 9-bay barrel vaulted undercroft with pointed and chamfered stone ribs. Stone flagged floor and stop chamfered jambs to the doorway. Springers above indicate that the upper was once similarly vaulted; now with trenched purlin trusses. 6-bay roof to the other range, with overlapping purlins.
Graded II* for the exceptional intrest of medieval vaulted undercroft.
Group value with Pengwern Hall and the Long Barn Range.
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