"An urgent appeal for blood donations issued by the German Health Minister Andrea Fischer brought a response from a surprising quarter- Count Dracula [Lancet, 354, 660 (1999)]

He's the last survivor of the Dracul family, Ottomar Rudolphe Vlad Dracul Prince Kretzulesco and lives in a crumbling castle on the outskirts of Berlin.

The Count volunteered to lead a campaign for blood donors on Aug 15-18. He also agreed to attend special showings of vampire movies to draw donors. Lancet's Nigel Glass reports that many went away with an autograph as a personal "thank you" from Dracula. Not in blood apparently.