Pwyll Prince of Dyved
Pwyll Prince of Dyved is the title of the first of the Four Branches of the Welsh medieval manuscript Mabinogion. Tolkien worked on an edition and translation of Pwyll, which reached to include around the first fifth of the first Branch (Tolkien's edition is held at the Bodleian Library). A discussion and presentation of (including a brief quote from) Tolkien's manuscript was provided by Carl Phelpstead in Tolkien and Wales: Language, Literature and Identity (2011; cf. pp. 11, 60-1, 139 n. 33).