
Wicca & modern earth religion
From the 14th to the 17th Century a hysteria spread across Europe which involved torturing and executing people based on accusations that they were witches. Whether any actual practicioners of a pre-Christian pagan tradition were persecuted as the result of a witch trial is up for debate. These books and texts are period documents which illustrate the methods, rationale (such as it was) and history of this persecution. They shouldn't be taken as illustrative of Neopaganism, but as a warning about religious tolerance and the fragile nature of justice.
Although little is actually known about the Druids, that didn't stop 18th and 19th century intellectuals from building a romantic mythology around them. This was closely associated with the rebirth of Celtic nationalism, as well as the Romantic and Gothic movements. This body of fact and speculation later became a central source of modern Wicca and Neo-Pagan belief and practice.