Irish Fairy Tales by Edmund Leary is now available in the public domain. According to the Celtic Myth Podshow,
The author of the tales contained in this volume was one of the brightest and most poetic spirits who have appeared in Ireland in the last half century. It is needless to say that he was also one of the most patriotic Irishmen of his generation–patriotic in the highest and widest sense of that term, loving with an ardent love his country, its people, its historic traditions, its hills and plains, its lakes and streams, its raths and mounds. Like all men of his type, he lived largely in the past, and his fancy revelled much in fairy scenes of childhood and youth. So reads the introduction to this book, originally published in 1906 and containing some great Fairy Tales.
You can read or download Irish Fairy Tales at Project Gutenberg.