Radulphe

Radulphe (also spelled Radulph, Rodolphe, etc.) was a French monk who, without permission from his superiors, left his monastery in France and travelled to the Rhine Valley during the Second Crusade (1145–1149) where he preached "that the Jews should be slain as the enemies of the Christian religion."

At Cologne, Simon "the Pious" was murdered and mutilated; at Speyer a woman was tortured on the rack to persuade her to convert to Christianity. Secular prelates tried to protect the Jews. Arnold, the Archbishop of Cologne gave them a fortified castle as refuge, and allowed them to arm themselves; the Crusaders refrained from attacking the castle, but killed any unconverted Jew that fell into their clutches. and Sully. In Bohemia 150 Jews were murdered by Crusaders. After the terror had passed, the local Christian clergy did what it could to help the surviving Jews; and those who had accepted baptism under duress were allowed to return to Judaism without incurring the dire penalties of apostasy.