Ancient Monuments

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Tomen y Faerdre Castle Mound

A Scheduled Monument in Llanarmon-yn-Ial (Llanarmon-yn-Iâl), Denbighshire (Sir Ddinbych)

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Latitude: 53.0964 / 53°5'47"N

Longitude: -3.2062 / 3°12'22"W

OS Eastings: 319328

OS Northings: 356150

OS Grid: SJ193561

Mapcode National: GBR 6X.8TZN

Mapcode Global: WH77J.QFFK

Entry Name: Tomen y Faerdre Castle Mound

Scheduled Date:

Source: Cadw

Source ID: 2921

Cadw Legacy ID: DE006

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Denbighshire (Sir Ddinbych)

Community: Llanarmon-yn-Ial (Llanarmon-yn-Iâl)

Traditional County: Denbighshire


The monument comprises the remains of a motte and ditch, dating to the medieval period (c. 1066 -1540 AD). A motte is a large conical or pyramidal mound of soil and/or stone, usually surrounded by either a wet or dry ditch, and surmounted by a tower constructed of timber or stone.

Tomen y Faedre consists of a mound with a summit diameter of c.30m diameter and 6m high, located upon a natural outcrop with the Afon Alyn in the north-west. The motte is ditched and counterscarped away from the river.

It is considered to have been built by Owain Gwynedd in 1149 in connection with his annexation of Powys. It was then taken by Iorwerth Goch ap Maredudd of Powys and burnt in 1157, and later restored and ditched by King John of England in 1212

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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