The book has been widely influential ... her translation of 11 medieval Welsh folk tales under the title The Mabinogion. The tales, which are outwardly concerned with the lives of various Welsh ...

The book is best known as a source of the tales of the Mabinogion, along with the White Book of Rhydderch. Most notably, it contains tale of the Dream of Rhonabwy. It also had much of its poetry ...