Hello. In the Blair Witch Project The Dossier, compiled by D. A. Stern, "Several Children (in Blair) accuse Elly Kedward of luring them into her home to draw blood from them. Kedward is found guilty of witchcraft, banished from the village during a particularly harsh winter, and presumed dead" this happened in 1785.
In 1786, just a year later..."By midwinter all of Kedward's accusers, along with half the town's children, vanish. Fearing a curse, the townspeople flee Blair and vow never to utter Elly Kedward's name again"
Flash forward to 1824..."Burkittsville is founded on the Blair site."
In 1941, "a total of 7 children are abducted from the area surrounding Burkittsville, Maryland. An old hermit named Rustin Parr walks into a local market and tells the people there that he is "finally finished." After police hike for four hours to his secluded house in the woods, they find the bodies of seven missing children in the celler...."