Ancient Monuments

History on the Ground

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Ty-Newydd Mound & Bailey Castle

A Scheduled Monument in Llannor, Gwynedd

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Latitude: 52.9166 / 52°54'59"N

Longitude: -4.4604 / 4°27'37"W

OS Eastings: 234667

OS Northings: 338299

OS Grid: SH346382

Mapcode National: GBR 58.N8Y3

Mapcode Global: WH449.GY6F

Entry Name: Ty-Newydd Mound & Bailey Castle

Scheduled Date:

Source: Cadw

Source ID: 559

Cadw Legacy ID: CN096

Schedule Class: Defence

Category: Motte & Bailey

Period: Medieval

County: Gwynedd

Community: Llannor

Traditional County: Caernarfonshire


The remains of a motte with slight traces of a bailey. The top of the motte is 6 m above the bottom of the surrounding ditch, and is 8 m in diameter. On the W, where best preserved, the ditch and counterscarp bank are 12 m wide, and the top of the bank is 2 m above the bottom of the ditch and 1.5 m above the outer ground level. The bank has been levelled on the E side. Slight traces of a bank are visible in the field to the E, possibly the outer wall of the bailey. The earlier house stood in this field, before the present Ty Newydd was built in the 17th C.

The monument is of national importance for its potential to enhance our knowledge of medieval settlement and defence. It retains significant archaeological potential, with a strong probability of the presence of associated archaeological features and deposits. The structures themselves may be expected to contain archaeological information concerning chronology and building techniques.

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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