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Cof Cymru: National Historic Assets of Wales · Wales

Pen-Sieri Inscribed Stone

Aberffraw, Isle of Anglesey, Wales

The record

Designation
Scheduled monument
Site type
Inscribed Stone
Period
Early Medieval
Community
Aberffraw
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates (centre of the scheduled area)
53.20690, -4.49506
SAM number
AN058
Cadw record number
3264

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1883 "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

The monument consists of a stone with an early-medieval memorial inscription dating to the 5th century AD. The stone measures 1.6m long and 0.4 - 0.46m square, with 'MAILIS-', (the stone of) Mail, inscribed in one vertical line. The lettering is well preserved and clear, about 8cm high and the inscription is 28cm long.

Once used as a lintel on the inner side of the window opening S of the door in the W wall of the building known as Pensieri Bach, the stone is thought to have originally stood in a field near Llanfaelog. When Pensieri Bach was demolished the stone was moved to a restored pig-sty at Trecastell c.2km further S, set vertically in the floor and secured in soft lime concrete.

The monument is of national importance for its potential to enhance our knowledge of the organisation and practice of religion and commemoration in the medieval period.

The scheduled area comprises a circular area 1m in diameter centred on the stone within the pig-sty.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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