Johann Weyer AKA in Dutch Jan/Johan/Johannes Wier, AKA Latin Ioannes Wierus and AKA Piscinarius Netherlands 1515 - 1588 Teacher: Cornelius Agrippa; the Devil; Johann Georg Faust; Johannes Trithemius; Students: son, Galenus Weyer; Dr. Sigmund Freud; Jean-Patrice Boudet; Reginald Scot; ; Richard Kieckhefer; Author: De Praestigiis Daemonum et Incantationibus ac Venificiis (On the Illusions of the Demons and on Spells and Poisons, 1563); Pseudomonarchia Daemonum (The False Kingdom of the Demons), an appendix to De Praestigiis Daemonum, 1577;

Comments: demonologist; Doctor; Critic of the persecution of witches and Malleus Maleficarum; used source manuscript Liber officiorum spirituum, seu Liber dictus Empto. Salomonis, de principibus & regibus dæmoniorum ("Book of the offices of spirits, or the book called Empto. Salomonis concerning the princes and kings of the demons";

Resources: http://en.wikipedia.org/wiki/Johann_Weyer; http://www.esotericarchives.com/solomon/weyer.htm [ if you read Latin);