Ancient Monuments

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Dingestow Castle

A Scheduled Monument in Mitchel Troy (Llanfihangel Troddi), Monmouthshire (Sir Fynwy)

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Latitude: 51.79 / 51°47'23"N

Longitude: -2.7902 / 2°47'24"W

OS Eastings: 345595

OS Northings: 210442

OS Grid: SO455104

Mapcode National: GBR FH.YDHK

Mapcode Global: VH79J.L89N

Entry Name: Dingestow Castle

Scheduled Date: 9 March 1950

Source: Cadw

Source ID: 2369

Cadw Legacy ID: MM113

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Monmouthshire (Sir Fynwy)

Community: Mitchel Troy (Llanfihangel Troddi)

Traditional County: Monmouthshire


The monument consists of the remains of a castle mound, dating to the medieval period (c. 1066 -1540 AD). The site comprises two enclosures located on the SW side of the River Trothy. The upper, western, enclosure is roughly rectangular in plan and measures 54m NW/SE by 38m NE/SW. It is up to 7m high and defined by steep-sided banks that drop to the surrounding ditch on the W,S and E sides and to the river on the N side. It is probably of natural origin, enhanced by the digging of the ditch. The lower enclosure, possibly the Bailey, adjoins the upper enclosure on the SE side and measures 36m NE/SE by 60m NE/SW. The ditch measures between 3m and 5m wide and is up to 2.5m deep. There is a 5m wide causeway over the ditch on the SW side that probably represents an original entrance. Documentary evidence from Giraldus Cambrensis suggests that Dingestow was built in the early 1180s by Ranulf Poer, Sheriff of Herefordshire, before being destroyed in 1184.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated deposits.

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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