In addition to the Holy Wells mentioned with the saints of the synaxarion, these sites are also known to have remains:
- St Llawddog, 6C, Cenarth, Carmarthenshire,
- St Saeran, 6C, Derwen, Denbighs,
- St Cynhafel, 7C, Llangynhafal, Denbighs,
- St Dyfnog, 6C, Llanrhaeader, Denbighs St,
- St Enddwyn, very remote (Llanbedr), Gwynedd,
- St Engan, 6C, Llanengan, Gwynedd,
- St Beris, 6C, Nant Peris, Gwynedd,
