TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

The Senacus Stone (formerly in Tudweiliog, Dwyfor)

Aberdaron, Gwynedd, Wales

A scheduled monument in Aberdaron, Gwynedd, recorded as Inscribed Stone (Early Medieval).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of The Senacus Stone (formerly in Tudweiliog, Dwyfor), Aberdaron, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Inscribed Stone
Period
Early Medieval
Community
Aberdaron
Unitary authority
Gwynedd
Country
Wales
Coordinates (centre of the scheduled area)
52.80391, -4.71132
SAM number
CN089
Cadw record number
2424

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

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1637 · Particular description of Wales. Cambria seu Wallia (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 133 Bardsey Island (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Monument.

A water-worn boulder 0.89 m high, 0.38 m wide at the base and about 120 mm thick. A Latin inscription in six horizontal lines reads: SENACVS/PRSB/HIC IACIT/CVM MULTITV/DNEM/FRATRVM (SENACUS/PRIEST/LIES HERE/WITH MANY BRETHEREN) and probably dates to the late fifth century or early sixth century. Lower down the stone is another line inscribed PRES?BI, assumed to mean 'Presbiter' (PRIEST). This last line is thought to be a later addition. The inscription is well preserved and, with the exception of the last line, is clearly visible.

Found near the farm now called Gors beneath Mynydd Anelog in the 18th century along with the Veracius Stone (CN090). It now resides inside St Hywyn's Church, Aberdaron.

The monument is of national importance for its potential to enhance our knowledge of early medieval inscribed stones and ecclesiastical life. Only the stone is scheduled.

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
See your own family's places on a living map