Gwynedd Archaeological Trust
Regional Historic Environment Record

St. Nidan's Church, Llanidan

Primary Reference Number (PRN) : 3151
Trust : Gwynedd
Community : Llanidan
Unitary authority : Ynys Mon
NGR : SH4949566903
Site Type (preferred type first) : MEDIEVAL CHURCH
Status : Scheduled Monument , Listed Building II*

Description :
It is a double aisled structure of which only the western part and the central arcade are now standing. From earlier accounts, it consisted, before its partial demolition in the mid 19th century, of a N and S aisle and a S chapel and porch, but it is probable that of this building the S aisle, with the chapel, represented the early medieval church to which the N aisle and arcade and possibly the porch was added in the late 15th century.

In 1844 the whole of the eastern portion of the church, with the exception of the arcade, was removed and the western end enclosed by a cross wall a little to the east of the porch. The only datable feature of the earlier part of the church now remaining is the 14th century S doorway, but the S chapel is said to have had a window of similar date. (RCAHMW, 1937)

The church, after demolition, was used as a mortuary chapel. In periodic use. A C13th font has been removed to the new parish church. <2>

Church of St. Nidan (old church) and wall of circular churchyard. Grade 'A'. <3>

Evaluation excavation released a stretch of earlier churchyard wall foundation within the present western boundary of the churchyard. A series of mortar floor deposits were noted within the nave of the church, which had been extensively damaged by later burial. The foundations of the original north wall of the nave, which pre-dated the 14th century, were recorded between the respond and the western arch of the 15th-century arcade of the north aisle. Floor deposits were also noted post-dating the erection of the late-15th-century arcade and north aisle, which had been subsequently disturbed by the insertion of two infant burials into the foundations of the demolished north wall of the nave. With the exception of the floor deposits surviving around the western respond of the arcade, the deposits within the north aisle had been excavated prior to the laying of the 1844 mortar floor. The deposit of mixed material beneath the 1844 floor contained disarticulated but whole human skeletal material, although no articulated burials were encountered during the evaluation excavations. (Dutton, Riley & Ward, 1995)

Description: A former parish church, that was partly demolished in 1844 following the construction of a new chu rch closer to the village. lt was a double aisled church with a central arcade, the south aisle dating from the 14th century, with the arcade and north aisle added in the 15th century. The west end remains roofed, whereas the remainder, with the exception of the central arcade, has been demolished to foundation level (RCAHMW 1937, 99).
Discussion: This is a very good example of a redundant parish church, with great potential for casting new light on the origins and growth of the early medieval and medieal church. Its link with Beddgelert (who held the tithes) is of interest, and suggests an early foundation date. The church is privately owned by the occupiers of the adjacent Llanidan Hall, who have also leased the cemetery. The site is scheduled. (Davidson, 2004).

“A few minutes' walk brought us to Llanidan church, which seems superior to the generality of Welsh buildings of the kind having a double roof and two bells in the clochti or belfry. Some arms of a prior date let into the wall near the communion table are I believe the same as those placed over the entrance door of the house. Here lyeth Price Fitz Gerald of Bodowir Gen? son of Edmund Llanidan Church. Fitz Gerald Gen? and Mary Price who died April xii MDCCIX being lineally descended from Gerard Oge of Rathrown who was descended from Mac Thomas a younger son of the Earl of Kildare in Ireland aet xxxiv. iv. m 8 R I P." (Skinner, 1802) (Sketch on pp. 28-9).

Illustration of the font at Llanidan (Arch Cam, 1846, No. 3).

Description and illustration of some details of Llanidan church (Jones, 1863).

A descriptive account, with interpretation, of the site as seen when visited by Cambrian Archaeological Association in August 1860 (Arch Cam, 1860).

An illustrated description of the finely grained, sandstone reliquary located in Llandinam Old Church with reference to a reliquary from Caldey island Priory. (Way, 1870).



Sources :
Davidson, A. , 2004 , Deserted Ecclesiastical Sites in North-West Wales: A Threat Related Archaeological Assessment ( © GAT)
Davidson, A., Hopewell, D., Kenney, J. & Longley, D. , 2002 , Early Medieval Burial and Ecclesiastical Sites 2001-2002 ( © GAT)
Dutton, L. A., Riley, H. & Ward, M. , 1995 , The Old Parish Church, Llanidan, Ynys Mon ( © GAT)
Longueville Jones, H. , 1863 , Mona Mediaeva
Skinner, Rev J. , 1908 , Ten Days' Tour Through The Isle of Anglesea, December 1802
The Royal Commission on the Ancient and Historical Monuments of Wales , 1937 , An Inventory of the Ancient Monuments in Anglesey
Unamed Author , 1860 , Bangor Meeting - Report
Unnamed Author , 1846 , Archaeologia Cambrensis
Walker, D. , 1985-1988 , Churches on Anglesey: Notes, Drawings and Photos
Walker, D. , 1985-1988 , Notes on Early Medieval Ecclesiastical Sites, Anglesey
Walker, D. , 1985-1988 , Notes on the Position of Ecclesiastical Sites on Anglesey
Walker, D. , 1985-1988 , Parish Church Index Cards
Ward, M. , 1995 , Llanidan Old Parish Church , Archaeology in Wales : Vol.35 : p.59
Way, A. , 1870 , Alabaster Reliquary Found in Caldey Island Pembrokeshire with Notices of an Object of the Like Description Existing in Anglesey
Royal Commission on Ancient and Historic Monuments , PRN 3151 , <5>
, 1965 , Aethwy Rd , <2>
Ordnance Survey , 1980 , SH46NE 18 , <3>
Hughes, H. R. , 1908 , Archaeologia Cambrensis , <6>
Tyrrel-Green, Rev. E. , 1920 , The Transactions of the Honourable Society of Cymmrodorion , <7>

Events :
40274 : The Old Parish Church, Llanidan, Ynys Mon (year : 1995)
40568 : Early Medieval Burial and Ecclesiastical Sites 2001-2002 (year : 2002)
40569 : Deserted Ecclesiastical Sites in North-west Wales: a Threat-related Archaeological Assessment (year : 2004)

Related records
National Monuments Record Wales NPRN 43637 https://coflein.gov.uk/en/site/43637/

Compiled date : 18-07-1994


Images :



The above data are supplied by GAT in partnership with its Local Authorities (Anglesey, Conwy and Gwynedd County Councils, and Snowdonia National Park Authority), © GAT 2025 (and in part © Crown, 2025 - as indicated)
This information is supplied for the purposes of personal interest only and may not be used as part of a commercial project.

March 29, 2025, 2:21 am - HTML file produced from Gwynedd Archaeological Trust Regional HER
Gwynedd Archaeological Trust, Craig Beuno, Garth Road, Bangor, Gwynedd.  LL57 2RT
tel (01248) 352535,  fax (01248) 370925, email her@heneb.co.uk, web www.heneb.co.uk