A Crow Come Over

Septon Cellador = Septon Cellar Door A passage from J. R. R. Tolkien's 1955 essay "English and Welsh" has been cited as the origin of the idea:[1] "Most English-speaking people...will admit that cellar door is 'beautiful', especially if dissociated from its sense (and from its spelling). More beautiful than, say, sky, and far more beautiful than beautiful. Well then, in Welsh for me cellar doors are extraordinarily frequent, and moving to the higher dimension, the words in which there is pleasure in the contemplation of the association of form and sense are abundant."

Greywater Watch and Howland Reed are references to Howl's Moving Castle, I believe. Interestingly enough, Howl's Moving Castle features a girl who is transformed into an old woman and back again to a young girl.