 Gillians cat is named Pyewacket. This name has become a popular one  for cats because of this movie, but few know its origin: Pyewacket  was one of the familiar spirits of a witch detected by the  "witchfinder general" Matthew Hopkins in March 1644 in the town of  Maningtree, Essex, UK. He claimed he spied on the witches as they  held their meeting close by his house, and heard them mention the  name of a local woman. She was arrested and deprived of sleep for  four nights, at the end of which she confessed and named her  familiars, describing their forms. They were:  