Cyfeirnod OS: SO193210
Lat/Lng: 51.8816997821,-3.17382175885
Llanddegyman
Llanddegyman, Sir Frycheiniog
A Study of Breconshire Place-Names (Llanrwst: Gwasg Carreg Gwalch, 1999), 93
Ffynonellau
The Lives of the British Saints (London: Honourable Society of Cymmrodorion, 1908), 324 Darllen ar-lein
'Parochiale Wallicanum' yn Y Cymmrodor (1910), 39
