The King of the Green Dozen
From Tolkien Gateway
The King of the Green Dozen is an incomplete story written by J.R.R. Tolkien. It is described as a pseudo-Celtic fairy-story with a little satire. The story is set in Wales and is about the King of Iwerddon who, along with his sons, has green hair. In a letter to Rayner Unwin in 1945 Tolkien states the story is half-written and could be finished if Unwin approves of Farmer Giles of Ham