Trioedd Ynys Prydein (The Welsh Triads)

Matter of Britain Document

Summary: Mnemonic three-part lists of British tradition ('Three Frivolous Bards of the Island of Britain'), many involving Arthur. Rachel Bromwich's edition is the standard. Evidence for a body of Arthurian story that was never written down as narrative.
Date: manuscripts from 13th c., material older
Language: Middle Welsh