The demon Andrealphus appears in the grimoires Book of Incantations, The Discoverie of Witchcraft, The Book of Spirits, Pseudomonarchia Daemonum, and The Lesser Key of Solomon
From The Lesser Key of Solomon, Crowley/Mathers edition:
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 there-in; 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.