The Mountain of Marvels: A Celtic Tale of Magic, Retold from The Mabinogion - Skyhook World Classics, #1

A thousand years ago, in the Celtic kingdoms of Wales, great lords gave great feasts for their fighting men and courtiers. In timbered halls, for days on end, heaps of meat and bread were washed down with gallons of beer and mead. And in between the meals, when bellies were stuffed and spirits high, the storyteller rose and spun his tales of times long past.  He told of lords, bold and generous. He told of ladies, grand and glorious.
He told of friends, brave and faithful. But of all he told about, no friend was more reliable than Manawydan, son of Llyr. No lady was more admirable than Rhiannon. And no lord was more honorable than Pwyll, King of Dyfed.  The halls are now long gone -- yet some tales were written down and gathered in a book we call today The Mabinogion. And so the tales live on.