What is the Earliest Reference to Arthur ?
There may be one near contemporary Reference to Arthur in the poem Gododdin (A.D. 600) which tells of a hero who although valiant was not as valiant as Arthur. This may be a case of interpolation. The earliest undisputed reference to Arthur occurs in the Historia Brittonum by Nennius (A.D. 800) which left enough time for fact to mix with fancy. SECTION 4 Merlin and Related Characters.