Keziah Mason
From Jenny Everywhere Wiki
Keziah Mason was an “infamous witch” and ancestor to Jenny Mason (about seventeen generations later) in Universe 925-B. When Jenny Mason became her reality's version of Jenny Over-There, the powers she manifested were actually a highly diluted version of her ancestor's magic. (PROSE: Annals of the Jen: One Year of Jenny Over-There: Interlude from 925-B)