Bibliography
Hugh
Williams
1903
article
Williams, Hugh, “Heinrich Zimmer on the history of the Celtic church”, Zeitschrift für celtische Philologie 4 (1903): 527–574.
Internet Archive: <link>
1899
work
Williams, Hugh, Gildae De excidio Britanniae / Gildas: The ruin of Britain, London: The Honourable Society of Cymmrodorion, 1899.
Internet Archive: <link>