The source is a book by Lady Wilde, first published in 1887, which explores the legends, superstitions, and charms of Ireland, specifically focusing on the belief in fairies and their role in Irish culture and folklore. The book examines the fairies' origins, their character, their interactions with humans, and the ways in which humans can protect themselves from their influence. Lady Wilde presents a rich collection of Irish folklore, highlighting the beliefs, customs, and fears that shaped the lives of the Irish people for centuries.