Ancient Monuments

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Tump Terrett Castle Mound

A Scheduled Monument in Trellech United (Tryleg Unedig), Monmouthshire (Sir Fynwy)

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Latitude: 51.7447 / 51°44'40"N

Longitude: -2.7257 / 2°43'32"W

OS Eastings: 349990

OS Northings: 205359

OS Grid: SO499053

Mapcode National: GBR JK.172P

Mapcode Global: VH876.PDWW

Entry Name: Tump Terrett Castle Mound

Scheduled Date:

Source: Cadw

Source ID: 1139

Cadw Legacy ID: MM016

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Monmouthshire (Sir Fynwy)

Community: Trellech United (Tryleg Unedig)

Traditional County: Monmouthshire


The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). It comprises a large steep-sided mound, 5m high, with a flat summit 14m in diameter. On the S and W sides there is no trace of a ditch, however, on the N side there is a wide, flat bottomed ditch 4m wide and 2.2m deep and on the E side there is a slight trace of a ditch 0.7m deep. Little is known about the history of the castle, however it is recorded as being in existence in 1231.

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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