Dictionnaire Infernal, 1818.
Amduscias, to whose voice the trees bow, and who commands twenty-nine legions:
https://jwz.org/b/ykbv
So far I've only made it halfway through "A", but I can confirm my suspicion that this book is the 1863 edition of the Monster Manual.
"Burned alive for building a clockwork robot" is a surprisingly recurrent theme.
@jwz Now I want to approach every slightly evil-looking person demanding "give me geometry lessons!" to see if they're a demon.