Explorations in Arthurian History The figure of Arthur begins as a war hero, the praises of whom are sung in war poems by the Celts and the Welsh. Y Gododdin celebrates one particularly brave warrior, then says he "was no Arthur." The Triads are full of wonderful, courageous things Arthur did. The most important early source for Arthur's deeds is Historia Brittonum, written by the monk Nennius in the 9th century. Nennius calls Arthur dux bellorum and tells us of 12 great battles Arthur fought. Although Nennius tells us the location of each battle, those locations are hard to come...