On August 2, 1100, the English king William Rufus was killed by an arrow while hunting in the New Forest, probably in an assassination, possibly by a genuine accident. We really don’t know. In modern times, though, that story developed an unexpected afterlife through the work of a bizarre scholar called Margaret A. Murray (1863-1963). Murray was a distinguished Egyptologist, who developed a grand unified theory of European witchcraft. She argued that the records of witch-trials were not simply fictitious, but actually contained accounts of genuine underground pagan cults that flourished within a notionally Christian Europe.
This theory was not wholly new to her, and she had plenty of predecessors over the previous decades, including feminists like Matilda Joslyn Gage. However, Murray brought the idea to a mass audience. That theory was expressed in Murray’s enormously influential 1921 book The Witch-Cult in Western Europe, and in The God of the Witches (1931). These books inspired countless horror novels, and Murray’s writings are even cited in H. P. Lovecraft’s Call of Cthulhu. They also largely inspired the actual creation of the Wicca movement, the supposedly revived witchcraft created by Gerald Gardner in the 1950s. Notionally, that too was a revival of an ancient pagan cult.