Arthur Machen
Around 1890 Machen began to publish in literary magazines, writing stories influenced by the works of Robert Louis Stevenson, some of which used gothic or fantastic themes. This led to his first major success, "The Great God Pan". It was published in 1894 by John Lane in the noted Keynotes Series, which was part of the growing aesthetic movement of the time. Machen's story was widely denounced for its sexual and horrific content and consequently sold well, going into a second edition.
Horned deity
In 1933, the Egyptologist Margaret Murray published the book, "The God of the Witches", in which she theorised that Pan was merely one form of a horned god who was worshipped across Europe by a witch-cult. This theory influenced the Neopagan notion of the Horned God, as an archetype of male virility and sexuality. In Wicca, the archetype of the Horned God is highly important, and is thought by believers to be represented by such deities as the Celtic Cernunnos, Indian Pashupati and Greek Pan.