Collen
Darllen ychwanegol
S. Baring-Gould and John Fisher The Lives of the British Saints (London: Honourable Society of Cymmrodorion, 1908), 157â –61 Darllen ar-lein
S. Baring-Gould and John Fisher The Lives of the British Saints (London: Honourable Society of Cymmrodorion, 1913), 375â –8 Darllen ar-lein
David Farmer The Oxford Dictionary of Saints (Oxford: Oxford University Press, 2011), 96
Elissa Henken Traditions of the Welsh Saints (Cambridge: D.S. Brewer, 1987), 221â –6, 332â –3
