Урбан III
He studied with Gilbert de la Porrée, first in Chartres and then in Paris, moving from four hearers to huge audiences in the hundreds. He is an important commentator on the dispute between Gilbert and Bernard of Clairvaux, about which he later wrote. The "Dialogus Ratii et Everardi", a work dated to the 1190s, and variously considered either fictional or based on real conversations, contains an exposition of Gilbert's views. The dialogue is presented between a letter to Pope Urban III and another letter, a literary structure that has been traced back to Sulpicius Severus.