Celtic Fairy Tales (Dover Children's Classics) - collected by Joseph Jacobs
I really enjoyed this short book of fairy tales. They are told in a conversational, story-telling style, making it a wonderful book for reading to children, or to memorize the tales to tell in some other setting. It includes some well-known stories, such as "Connla and the Fairy Maiden", where Connla rides with the fairies and steals the maiden they wanted to steal, and winds up marrying her; or "Fair, Brown, and Trembling", a celtic take on Cinderella.
I particularly enjoyed "A Legend of Knockmany", though I've read it before. It's the story of how Oonagh, Fin M'Coul's wife, scared off Cucullin by pretending Fin was his own infant son. (All spellings from the book.) Upon seeing how strong the "baby" was, Cucullin realized the father must be immensely stronger than he himself was, and fled.
There are lesser known stories in the book as well, like "The Shee an Gannon" where a young man must discover what stopped Guragach Gaire from laughing in order to win the hand of the princess. I also enjoyed "Gold-Tree and Silver-Tree", in which a man's first wife is murdered by her mother out of jealousy over her beauty. His second wife revives his first, helps her kill her mother, and the two of them live happily with the husband ever after.
Some of the stories are simply re-tellings of other stories, like "Conall Yellowclaw" where a man disguises himself as a sheep to get out of the cave of a blind cyclops. Just like Odysseus and Polyphemus.
Overall, a very enjoyable book.