Page "Arawn" Paragraph 6

Some writers, notably Robert Graves, have written of an incident in which Amaethon steals a dog, lapwing and a white roebuck from Arawn, leading to the Cad Goddeu ( Battle of the Trees ), which Arawn lost to Amaethon and his brother, Gwydion.

The standard text of ' Cad Goddeu ' in the Book of Taliesin makes no mention of this, but the Welsh Triads records the Battle of Goddeu as one of the " Three Futile Battles of the Island of Britain ... it was brought about by the cause of the bitch, together with the roebuck and the plover ", while Lady Charlotte Guest notes in her Mabinogion an account in the Myvyrian Archaeology that the battle " was on account of a white roebuck and a whelp ; and they came from Hell, and Amathaon ab Don brought them.

And therefore Amathaon ab Don, and Arawn, King of Annwn ( Hell ), fought.

And there was a man in that battle, unless his name were known he could not be overcome ; and there was on the other side a woman called Achren, and unless her name were known her party could not be overcome.

And Gwydion ab Don guessed the name of the man ".