Ancient Monuments

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Cottrell Castle Mound

A Scheduled Monument in St. Nicholas and Bonvilston (Sain Nicolas a Thresimwn), Vale of Glamorgan (Bro Morgannwg)

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Latitude: 51.462 / 51°27'43"N

Longitude: -3.3244 / 3°19'27"W

OS Eastings: 308089

OS Northings: 174506

OS Grid: ST080745

Mapcode National: GBR HR.M0J2

Mapcode Global: VH6FB.BJD1

Entry Name: Cottrell Castle Mound

Scheduled Date: 10 March 1975

Source: Cadw

Source ID: 3686

Cadw Legacy ID: GM364

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Vale of Glamorgan (Bro Morgannwg)

Community: St. Nicholas and Bonvilston (Sain Nicolas a Thresimwn)

Traditional County: Glamorgan


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.

Cottrell consists of a flat-topped mound 35m in diameter with the top measuring 21m in diameter. The sides are of varying height and steepness; on the west the side is 2.5m high with no ditch. On the north side it is 2m high with a 5m wide berm and then a further drop of 1.5m. The east side is less well defined, with a 2.2m height, then a 4m wide berm and a further 1m drop - this side is steep. The south side is less steep and measures 1.5m high with a ditch 1.5m wide by 1m deep outside it.

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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