Damh the Bard Y Mabinogi: Second Branch.

Let him tell you now, of the beautiful Branwen, of Manawydan, of Nysien and Efnysien, and of the Cauldron of Rebirth. For these are the tales of Bendigeidfran, or as you may know him, Bran the Blessed. Giant, warrior, and High King of the Island of the Mighty!