A great little video from England in 1971.
Talks about witches and witchcraft but gets it all confabulated with satanism. It does feature noted witchcraft experts Alex Sanders and Doreen Valiente.
Still though, exactly the sort of thing I would have been watching in the 70s and 80s when I was gaming and playing wizards, priests and witches.
Another one from around 1998 is Witchcraft: Myth and Reality.
It is a bit more even handed.
Watch these and you will get an idea of the sort feel I wanted in The Witch and Eldritch Witchery.