Ancient Monuments

History on the Ground

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Holywell Castle Mound

A Scheduled Monument in Holywell (Treffynnon), Flintshire (Sir y Fflint)

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Latitude: 53.2774 / 53°16'38"N

Longitude: -3.2225 / 3°13'20"W

OS Eastings: 318581

OS Northings: 376294

OS Grid: SJ185762

Mapcode National: GBR 5ZYJ.4W

Mapcode Global: WH76K.GWQD

Entry Name: Holywell Castle Mound

Scheduled Date:

Source: Cadw

Source ID: 199

Cadw Legacy ID: FL029

Schedule Class: Defence

Category: Motte

Period: Medieval

County: Flintshire (Sir y Fflint)

Community: Holywell (Treffynnon)

Traditional County: Flintshire


The monument comprises the remains of a presumed 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. Holywell Castle Mound consists of a 1.8m high mound at the northern end of a steep sided promontory. There are traces of a ditch on the southern side. Later garden features have disturbed the original form of the motte.

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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