Also while not completely unrelated to folklore, the philosopher Takeshi UMEHARA is noted for his work 'History of Onryo' which looks at Japanese history from the point of view of the appeasement of revengeful ghosts.
また民俗学と全く関係ないわけでもないが哲学者の梅原猛は日本史を怨霊鎮めの観点から捉えた「怨霊史観」で著名である。