Gildas. Brythonic monk (
c.495–
c.570), born, according to tradition, near what is today Glasgow, contemporary of
Dewi Sant, whose
De Excidio Britanniae [On the Ruin of Britain] (
c.540–8) is the only early work covering the phase of history to which King
Arthur is usually assigned. His description of the battle at Mount Badon is most often cited. Gildas argued that the Brythonic defeat before the Saxons was occasioned by moral failure and that in repentance ‘good men’ should join monasteries; thus he sometimes bears the title ‘saint’, although later medieval writers thought the saint and the historian were two different people. Even though
De Excidio is composed in an inventive Latin, Gildas is sometimes cited as a father of Welsh literary tradition; his name is also known in Cornish and Breton traditions; see Joseph Loth, ‘Le Nom de Gildas dans l'Iˆle de Bretagne en Irlande et en Armorique’,
Revue Celtique, 46 (1929), 1–15; Pádraig Ó Riain, ‘Gildas: A Solution to His Enigmatic Name’, in Catherine Laurent and Helen Davis (eds.),
Irlande et Bretagne (Rennes, 1994), 33–9. See also Michael Winterbottom (ed. and trans.),
The Ruin of Britain (Chichester, UK, and Totowa, NJ, 1978); Michael Lapidge and David Dumville (eds.),
Gildas: New Approaches (Woodbridge, UK, 1984).