Pierre Cauchon

Pierre Cauchon (1371 – 18 December 1442) was the Bishop of Beauvais from 1420 to 1432.

He was a member of the Templar Order and one of the men responsible for the execution of Jeanne d'Arc, though Jeanne had in fact been replaced with the maid Fleur by the Assassins.

Reference

 * Assassin's Creed: Heresy