I'm absolutely sure..

... that there's no connection with what follows.

Black Annis (also known as Black Agnes or Black Anna) is a bogeyman figure in English folklore. She is imagined as a blue-faced hag or witch with iron claws and a taste for human flesh (especially children). She is said to haunt the countryside of Leicestershire, living in a cave in the Dane Hills with a great oak tree at the entrance.

She is said to venture out at night looking for unsuspecting children and lambs to eat, then tanning their skins by hanging them on a tree before wearing them around her waist. She would reach inside houses to snatch people. Legend has it that she used her iron claws to dig her cave out of the side of a sandstone cliff, making herself a home there which is known as Black Annis' Bower Close. The legend led to parents warning their children that Black Annis would get them if they did not behave. She was also known to hide in the branches of her oak tree waiting to leap upon unsuspecting prey.

So pure coincidence...