Taliesin

Traveling Bard or better known as a Minstrel, who is the chieftain of the Brigante tribe; the direct descendants of Pwyll that the Gael tribe broke away from. He passes the chieftain status to Arthur later on. Later he learned about Arawn's past and his suffering. Through those past visions, he learned how to play the Song of Creation, which he eventually used it to stop the blizzard to cause the entire mountain to crumble onto majority of the host of heaven.He is fortold that he will have terible future devoured by a beast - most likely by the love of dragon baby, that travel with him after the war.

[Source: Wikipedia]