(Duke/Count) Murmur is a Great Duke and Earl of Hell. He teaches Philosophy, and can oblige the souls of the deceased to appear before the conjurer to answer every desired question.
Murmur is depicted as a soldier riding a vulture or a griffin, and wearing a ducal crown. Two of his ministers go before him making the sound of trumpets. "Murmur" in Latin means noise, whisper, murmur, and the sound of the trumpet.