Capel Dewi, Llandysul, a village in the community of Llandysul, Ceredigion, Wales
John Weston Thomas had three students, these were Alun Thomas (his son), Bryan Blackmore (in Pembrokeshire) and Allan Shiers (in Llandysul) all three are still working as harp makers.
Other fortifications associated with Vortigern are at Arfon in Gwynedd, Bradford-on-Avon in Wiltshire, Carn Fadrun in Gwynedd, Clwyd in Powys, Llandysul in Dyfed, Old Carlisle in Cumberland, Old Sarum in Wiltshire, Rhaeadr Gwy in Powys, Snowdon, and Stonehenge in Wiltshire.