Saw the movie “An Education” yesterday. A small subplot turns on one of the characters pretending to know C.S. Lewis and forging an autograph on a copy of The Lion, the Witch, and the Wardrobe. Debate ensues about whether he goes by “Clive” or “C.S.” I know that he went by “Jack” with friends and family, and the letters I’ve seen are usually signed “C.S. Lewis,” “C.S.L.,” or “Jack.” Did he ever go by “Clive”?