Glyn is a Grade II* listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 2 September 1952. A C17 Farmhouse.

Glyn

WRENN ID
south-cinder-crimson
Grade
II*
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
2 September 1952
Type
Farmhouse
Address
Glyn, Llanbedrgoch, Llanfair-Mathafarn-Eithaf
OS grid reference
SH 515 813
Coordinates
53.30808, -4.2296
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

This is an early to mid-17th century farmhouse, later expanded. It is constructed of roughly coursed rubble masonry with a rendered southern wall to the eastern portion, and has a slate roof with Velux windows on the front (south) slope. Tall stone stacks with capping indicate the original extent of the house, including a twin shafted stack to the east. The windows are hornless sash and casement styles, many with slate sills and relieving arches.

The main range faces south and overlooks an enclosed garden, featuring a five-window range of varying sizes. The doorway is offset to the west end of the older part of the house, while the easternmost windows are modern. At the west gable, a ground floor fireplace and a blocked first-floor doorway are visible; a later doorway was cut to the north of the fireplace on the ground floor. The north wall contains ground and first-floor windows with relieving arches, and a later 17th-century dormer window in the roof.

The north wing features a blocked doorway in the west wall, retaining 14th-century jambs and part of a pointed arch. It also has ground and first-floor windows. The later 17th-century east gable has windows to each floor, with some first and attic windows narrowed.

A late 19th-century outshut is attached to the northwest angle, including a rear door on the north wall, along with a small window left and larger timber casement window right. The east gable has a narrow doorway with a cambered brick head; a four-pane sash window is on the first floor, and a small paned casement window is to the right of the door on the ground floor.

The interior shows some replanning and modernization but retains original features. The rooms in the older part of the house have ovolo molded cross beams. The staircase in the north wing has original square newels and is believed to have been reconstructed in the late 18th century. The mid-17th century east block contains a room on each floor. The ground floor room boasts a contemporary plaster cornice featuring molded reliefs of military trophies (cannon, ammunition, firearms, helms and gauntlets) interspersed with blank shields, which also decorate the soffit of the cross beam. Above the fireplace is a colored plaster panel depicting an achievement displaying a chevron between three helmets impaling the arms of Hwfa ap Cynddelw, supported by figures, flanked by curtains and columns. The first-floor room has a molded, plastered beam with drops on the soffit and a matching molded cornice. The plan of the cornice moulding suggests the former existence of a five-sided vestibule in the corner of the room near the door. A colored plaster panel in high relief, illustrating a biblical or mythological scene flanked by stylized palm trees, is above the fireplace. The fireplace surround is slate, etched with simple and bold floral designs. The attics, which were not inspected, are said to contain a corner fireplace with a molded mantel ledge; above it is a plaster shield displaying the arms of Hwfa ap Cynddelw, supported by two draped female figures, with the date and initials "164(4) I. BOLD" above.

Local climate

Glyn sits in a wetter-than-average part of the UK, with an average of 1,070 mm of rain a year. This makes it wetter than 86% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 14 freeze-thaw cycles a year, fewer than 87% of listed buildings. Of these, 5 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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