Ancient Monuments

History on the Ground

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Llysun Motte and Bailey

A Scheduled Monument in Llanerfyl, Powys

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Latitude: 52.6797 / 52°40'46"N

Longitude: -3.434 / 3°26'2"W

OS Eastings: 303150

OS Northings: 310076

OS Grid: SJ031100

Mapcode National: GBR 9M.495T

Mapcode Global: WH79C.7X01

Entry Name: Llysun Motte and Bailey

Scheduled Date:

Source: Cadw

Source ID: 3771

Cadw Legacy ID: MG072

Schedule Class: Defence

Category: Motte & Bailey

Period: Medieval

County: Powys

Community: Llanerfyl

Traditional County: Montgomeryshire


The monument comprises the remains of a motte and bailey castle, constructed upon a natural elongated hillock, in the valley of the Afon Banwy. The motte lies to the northeast, with an associated lower platform and bailey to the southwest. The motte stands 4m above the surrounding pasture, and is separated from the lower platform by a ditch (now substantially infilled with eroded motte material). The nature and characteristics of this monument suggest that it is of Welsh construction, as opposed to Anglo-Norman.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is an important relic of a wider medieval landscape. Despite historically recent severe erosion, 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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