Scheduled MonumentsWalesCastell Coety
Medieval · Castle

Castell Coety

Wales
Cadw SAM GM004
Period
Medieval
Site type
Castle
Broad class
Defence
Nation
Wales
Boundary

Scheduled area

© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw

Overview

History & significance

Castell Coety is a Norman castle situated in the Vale of Glamorgan, South Wales, which was established in the late eleventh century as part of the Anglo-Norman conquest and settlement of South Wales. The castle comprises a motte-and-bailey earthwork overlaid with later stone structures, including a substantial stone keep and curtain wall that date largely from the twelfth and thirteenth centuries. The site was strategically positioned to control the fertile lowlands of Glamorgan and served as a significant fortress during the medieval period, though it declined in importance following the consolidation of English authority in Wales. The remains visible today demonstrate the transition from early timber defences to more substantial masonry construction characteristic of Norman military architecture in Wales.

Castell Coety is a scheduled monument protected by Cadw under reference GM004. View the official record →

About this monument

Questions & answers

What is Castell Coety?

Castell Coety is a Norman castle situated in the Vale of Glamorgan, South Wales, which was established in the late eleventh century as part of the Anglo-Norman conquest and settlement of South Wales. It is designated a Scheduled Ancient Monument by Cadw under reference GM004.

What period does Castell Coety date from?

Castell Coety dates from the medieval period, and is classified as a castle. It is one of over 32,000 scheduled monuments protected across the UK.

Who is responsible for protecting Castell Coety?

Castell Coety is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is GM004.

What other scheduled monuments are near Castell Coety?

Several scheduled monuments lie within 10 km, including Stepsau Duon (6 km), Croes Antoni (7 km), St Bride's Major Churchyard Cross (7.1 km).

Unlimited access

Everything a full report reveals about Castell Coety

This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Coety's history, each drawn from the record and mapped to the exact spot:

Overview
An interactive map of the location with every monument and battle plotted, and a plain-language history built only from what the record holds.
Monuments
The legally protected scheduled monuments around the location, each with its period, type and significance.
Battlefields
The battles and sieges fought on this ground, mapped and set on a timeline of the wider conflict.
Roman Britain
The Roman roads, forts and towns near here, and the Iron Age people who held the land before Rome arrived.
Civil War
The Civil War fighting, garrisons and recorded militaria in this area, woven into the arc of 1642 to 1651.
Geology
The bedrock beneath the site, its age and rock type, reaching back hundreds of millions of years.
Local Names
What the street and field names around here actually mean, and the history buried inside them.
Historical Maps
Ordnance Survey maps from the 1800s, layered over the location as it stands today.
Literature
The books, county histories, charters and archives that mention this place, quoted with their sources.
Legal
The protected sites nearby and the metal-detecting, access and treasure laws that apply to this ground.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Target Zones
For detectorists: the most promising ground to search nearby, ranked by confidence, with what to expect.
Timeline
The whole story of the location told era by era, from prehistory to the present day.
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Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.

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The ground beneath

The bedrock under Castell Coety

Castell Coety stands on Triassic Rocks (Undifferentiated), bedrock that formed in the Triassic. The rock here is sandstone and conglomerate, interbedded.

The wider landscape

Around Castell Coety

Caerphilly CastleArchaeological site · ~14.8 miles