Intellectual women down the ages have frequently been suspected of witchcraft (muttering strange formulae, speaking foreign languages, and generally being cleverer than their peers).
Readers of a romantic disposition may recall the scene in
Ivanhoe, when
Rebecca, the beautiful and intellectual Jewess, is accused of witchcraft because she speaks Hebrew. Apparently the character may have been inspired by the real life bluestocking, Rebecca Gratz, a preeminent Jewish American educator and philanthropist who was the first Jewish female college student in the United States.
Then of course there are the fictional witches featured previously in this august publication, Mss Weatherwax and Mss Hawthorne. Both highly intelligent and independent women.

More recently, the vitriol heaped on the highly intelligent, beautiful and charming
Gail Trimble, always correctly attired in classic and timeless garb, has led to the suggestion that she should be
burnt as a witch (this article is of course a spoof, but it's a spoof of the actual sexual innuendo and general opprobrium that was heaped on her merely for being an intellectual).
The connection is probably because both intellectuals and witches transgress against the patriarchal dictum that women are not allowed to be powerful. And of course, there is significant overlap between intellectuals, feminism and witchcraft.