Frederick Leigh Gardner (1857–1930) was a well-known British occultist who belonged to societies including the Hermetic Order of the Golden Dawn, the Freemasons, the Societas Rosicruciana in Anglia and the Theosophical Society. Born to spiritualist parents, Gardner worked as a stockbroker and later became an antiquarian bookseller. He planned a detailed catalogue of books on the occult scienc…