Elliott O'Donnell (February 27, 1872 - May 8, 1965) was an Irish author known primarily for his books about ghosts. He claimed to have seen a ghost, described as an elemental figure covered with spots, when he was five years old. He also claimed to have been strangled by a mysterious phantom in Dublin. He claimed descent from Irish chieftains of ancient times, including Niall of the Nine Hostages (the King Arthur of Irish folklore) and Red Hugh, who fought the English in the sixteenth century. O'Donnell was educated at Clifton College in Bristol, England, and later at Queen's Service Academy, Dublin, Ireland. In later life he became a ghost hunter. His first book, written in his spare time, was a psychic thriller titled For Satan's Sake (1904). From this point onward, he became a writer. He wrote several popular novels, including an occult fantasy, The Sorcery Club (1912) but specialised in what were claimed as true stories of ghosts and hauntings. O'Donnell wrote material for numerous magazines,including Hutchinson Story Magazine, The Novel Magazine, The Idler, Weekly Tale-Teller, Hutchinson's Mystery-Story Magazine, Pearson's Magazine, Lilliput and Weird Tales. As he became known as an authority on the supernatural, he was called upon as a ghost hunter. He also lectured and broadcast (radio and television) on the paranormal in Britain and the United States. In addition to his more than 50 books, he wrote scores of articles and stories for national newspapers and magazines.