S. Baring-Gould & John Fisher, The Lives of the British Saints (London: Honourable Society of Cymmrodorion, 1907), 184    View online

Francis Jones, The Holy Wells of Wales (Cardiff: 1954), 172

A.W. Wade-Evans, 'Parochiale Wallicanum' in Y Cymmrodor (1910), 103 n. 5

'Parochialia being a summary of answers to [Edward Lhwyd's] 'Parochial Queries'. Part i: North Wales' in Archaeologia Cambrensis (1909), 154