Andrealphus

Goetia - S. L. MacGregor Mathers (1904) 

The Sixty-fifth Spirit is Andrealphus. He is a Mighty Marquis, appearing at first in the form of a Peacock, with great Noises. But after a time he putteth on Human shape. He can teach Geometry perfectly. He maketh Men very subtle therein; and in all Things pertaining unto Mensuration or Astronomy. He can transform a Man into the Likeness of a Bird. He governeth 30 Legions of Infernal Spirits, and his Seal is this, etc.

Pseudomonarchia daemonum - Johann Wier (1583) 

Andrealphus is a great marquesse, appearing as a pecocke, he raiseth great noises, and in humane shape perfectlie teacheth geometrie, and all things belonging to admeasurements, he maketh a man to be a subtill disputer, and cunning in astronomie, and transformeth a man into the likenes of a bird, and there are under him thirtie legions.