The only people who I feel would really know who Shanoa is off the bat would be Castlevania related people.  Namely, the individuals from the Order of Ecclesia game, the characters that were involved in the multiplayer Harmony of Despair, and the characters involved in the travesty that was Castlevania: Judgement.  Alucard would definitely know her, since he was in two of those three.<br/><br/>Perhaps the characters in the fanmade Serio's Castlevania Fighter game as well if fanmade games count.<br/><br/>Edit: Will probably have a post out once Tingle's post is up.  If not tonight, then probably after I get home tomorrow provided it's up by then.