Abounding with brave warriors, fair maidens, monsters, and mermaids, the 13 stories in this volume of Celtic mythology include "The Fate of the Children of Lir," "The Overflowing of Lough Neagh," "Connla of the Golden Hair and the Fairy Maiden," "The Fairy Palace of the Quicken Trees," and 9 others.
Here's a sample of other books in this Dover category
Celtic Myths and Legends by T. W. Rolleston Masterful retelling of Irish and Welsh stories and tales, including Cuchulain, King Arthur, Deirdre, the Grail, and many more. First paperback edition. 58 full-page illustrations and 18 figures.
Traditional Irish Fairy Tales by James Stephens Ten delightful tales brimming with enchantment, whimsy and sly humor: "The Little Brawl at Allen," "The Enchanted Cave of Cesh Corran," "Mongan's Frenzy," 7 more. 20 illustrations.