Reasons for the Crusades

• What idea had Gratian proposed about 'Just War'

  • Concordia Discordantium Canonum which provided a justification of how the Just War theory worked
• What ideas had Urban II proposed about Jerusalem

  • Baudian of Dol = Urban II claimed Jerusalem was 'polluted with Muslims'
  • Robert of Reims = Jerusalem was a prosperous and spiritual location where it was being corrupted by Muslims
  • Guibert of Nogent = Urban II mentioned Jerusalem and its importance of Christ's Passion
• What examples are there of papal support

  • Pope Paschal II had threatened excommunication for any First Crusader who wanted to abandon their journey to Jerusalem
  • Pope Clement III asked provisions of wealth from Canterbury and Genoa to fund a crusade in 1188