thanks!!!

The book Darkhenge by Catherine Fisher is available from most online bookstores, it's kinda like a modern retelling of the welsh myth. the welsh myth of Ceridwen is closely linked with the myths of the welsh poet Taliesin (dating back to approx 16th century)

The legend of Ceridwen (sorry i'm just paraphrasing from memory, so some aspects of the story may be different) is that once she was a sorceress who gave birth to a hideous son. She therefore creates a potion in order to give her son wisdom and knowledge (considering he wasn't beautiful). The first three drops of the poison would grant this wish, the rest of the potion, however, would turn to poison. She employs a young boy, Gwion to stir the potion and whilst he stirs it three drops spill onto his hand, of course with the burning sensation he puts his hand to his mouth, and therefore swallows the potion - gaining the wisdom and poetry that was meant for Ceridwen's son. Because of this fear Gwion flees. Ceridwen then pursues him. Using his newfound wisdom he is able to turn himself into different animals in order to evade the enchantress, such as a hare, fish and bird. Of course, Ceridwen being more powerful follows suit and transforms in to a greyhound, otter and hawk in order to catch him. She eventually catches him and swallows him. But because of the potion he does not die, but instead she gives birth to him. She can't bring herself to kill this new-born Gwion because he is born beautiful, so she discards him by throwing him into the ocean. He is later found on a shore by a prince and raised to become the bard Taliesin.

I hope this helps!