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Last name meaning Deane: This ancient name is chiefly of Anglo-Saxon origin, derived from the Olde English pre 7th Century denu, valley, in Middle English dene...
Dean's name also has a special meaning. Professor Moriarty was Sherlock Holmes' nemesis, and this link may indicate that there is probably something dark about Dean. In fact, this is further hinted at when Sal identifies Dean as the Shrouded traveler that pursues him ceaselessly across the continent.