Bernard Gui, also known as Bernardo Gui or Bernardus Guidonis, was a Limousin Dominican friar, Bishop of Lodève, and a papal inquisitor during the later stages of the Medieval Inquisition.
14th-century illustration of Gui receiving a blessing from Pope John XXII
Illustrations from a copy of Gui's Arbor genealogiae regum francorum produced in the 1330s, showing the Carolingian kings Lothair and Louis V
Practica officii inquisitionis heretice pravitatis, manuscript, 14th century. Toulouse, Bibliothèque d'Etude et du Patrimoine, Fonds Manuscrits, Ms 388.
Catharism was a Christian quasi-dualist and pseudo-Gnostic movement in northern Italy and southern France between the 12th and 14th centuries.
Bernard Gui
…Fournier (later Pope Benedict XII). Gui's inquisitorial work took place in the Languedoc, a region that remained a "stronghold of heresy", in particular Catharism, despite the church's repeated efforts in the area throughout the thirteenth century (such as the Albigensian Crusade of 1209–1229). In this capacity…
St. Paul, by Valentin de Boulogne.
The Fall of the Rebel Angels by Hieronymus Bosch
Painting by Pedro Berruguete portraying the story of a disputation between Saint Dominic and the Cathars (Albigensians), in which the books of both were thrown on a fire and Dominic's books were miraculously preserved from the flames.
Cathars being expelled from Carcassonne in 1209.