What is Wierius?

Answer 1

Johann Weyer, aka Wierus, Wier (1515-1588) was a German physician, occultist and demonologist, disciple and follower of Heinrich Cornelius Agrippa. He wrote the books De Praestigiis Daemonum (1563) and twenty years later Pseudomonarchia Daemonum (1583) as an appendix to the first. AU