Rock Worm Study, Red as a vamp? and Philip not the same?

[Kedjane]

Well, seven is a magic number. Crosses are holy.
He perhaps made seven crosses since its more fun than just one? And I think we'll never find out. Even if it is seven crosses, even if it turns out Red was religious, it will just be trivia/lore. There probably wont be a dungeon riddle later: "How many crosses hast thou seen in thy journey?"