Ancient Monuments

History on the Ground

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Twyn Tudor

A Scheduled Monument in Pontllanfraith (Pontllan-fraith), Caerphilly (Caerffili)

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Latitude: 51.6373 / 51°38'14"N

Longitude: -3.167 / 3°10'1"W

OS Eastings: 319335

OS Northings: 193814

OS Grid: ST193938

Mapcode National: GBR HY.843M

Mapcode Global: VH6DN.233N

Entry Name: Twyn Tudor

Scheduled Date: 2 November 1933

Source: Cadw

Source ID: 2972

Cadw Legacy ID: MM035

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Caerphilly (Caerffili)

Community: Pontllanfraith (Pontllan-fraith)

Traditional County: Monmouthshire


The monument comprises the remains of a motte and bailey castle, a military stronghold built during the medieval period. Twyn Tudor stands on level ground to the S of St Tudur's church. It is a large and steep sided mound, 12m high with a slightly dished summit 14m in diameter. A shallow ditch surrounds the S, N and E sides, this is 5m wide and 1.5m deep, becoming 0.6m deep on the N side. The ditch is not discernible on the W side. There is no bailey evident.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive organisation. The well-preserved monument forms an important element within the wider medieval context and the structure itself may be expected to contain archaeological information relating to chronology, building techniques and functional detail.

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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