Was Glenda, from the Wizard of Oz, actually the wicked witch of the North well?
There is a theory that Glenda (From the Welsh word for good) dropped Dorothy's house on the wicked witch of the East and not the tornado and that she uses Dorothy again and again, to gain control of Oz.
One of the first things Glinda tells Dorothy is that she killed the wicked witch of the east, as if it were a good thing, although Dorothy doesn’t know what was good about it. When the witch of the West comes along Glinda then gives Dorothy the Ruby slippers, the only thing the bad witch seems to want.
However Glinda never tells Dorothy, who wants to go home more than anything else, that the slippers will take her. Instead she has Dorothy go to Oz where she exposes the Wizard as a fake and then kills the witch of the East….and now all of oz belongs to Glenda who never got her hands dirty in the fight.