Buer

Dictionnaire Infernal – Collin de Plancy (1863) (paraphrased)
Buer is a president of hell and a demon of the second order who commands 50 legions. His form is that of a five-branched star or wheel, and he moves by rolling himself. Buer teaches philosophy, logic, and herbal medicine He is also skilled in curing the sick and giving good servants.

Pseudomonarchia daemonum – Johann Wier (1583) (quoted)

Buer is a great president, and is seene in this signe; he absolutelie teacheth philosophie morall and naturall, and also logicke, and the vertue of herbes: he giveth the best familiars, he can heale all diseases, speciallie of men, and reigneth over fiftie legions.

Goetia – S. L. MacGregor Mathers (1904) (quoted)

The Tenth Spirit is Buer, a Great President. He appeareth in Sagittary, and that is his shape when the Sun is there. He teaches Philosophy, both Moral and Natural, and the Logic Art, and also the Virtues of all Herbs and Plants. He healeth all distempers in man, and giveth good Familiars. He governeth 50 Legions of Spirits, and his Character of obedience is this, which thou must wear when thou callest him forth unto appearance.