Four 7th- to 11th- century carved stones, St Davids 14, 15, 16 & 17 (NPRNs 423520, 423521, 423522 & 423523), originate from just north of Penarthur Farm. An unenclosed parcel of land belonging to the bishop was known as `Maenarthur? in documents of 1326. The parcel of ecclesiastical land and presence of the stones suggest that the site was the location of a 7th- to 11th-century cemetery and chapel. A cropmark measuring some 40m in circumference has been identified on aerial photographic coverage in the field immediately to the south of Maenarthur. A well, Ffynnon Penarthur, is located some 450m south-east of the site. Another well, Ffynnon Parc-y-berth, is depicted on first edition Ordnance Survey mapping some 100m east of the site. The stones are generally accepted to have been originally placed upright around a holy well to the east of the small parcel of land belonging to the Bishop and known as Maenarthur, where the stones were first recorded. It is unclear whether this was Ffynon Penarthur or Ffynnon Parc-y-Berth.The site is some 500m west of the River Alun, which flows through The Close of St Davids Cathedral.

Sources include:
Cambria Archaeology, 2003, Early Medieval Ecclesiastical Sites Project, Pembrokeshire gazetteer
Edwards, N. 2007, Corpus of Early Medieval Inscribed Stones and Stone Sculpture in Wales

N Vousden, 30 October 2018