William of Paris

William of Paris (unknown – 1314) was a French Dominican priest and theologian, serving as the confessor of Philip IV of France. Appointed inquisitor of France in 1303, William played an important role in the trials and persecution of the Knights Templar.

Along with the Assassin Mentor Guillaume de Nogaret and Philippe de Marigny, William tortured Grand Master Jacques de Molay, forcing him to admit to heresy.

Nearly 500 years later, the Grand Master's descendant Anne de Molay attempted to murdere William's descendant Victor de Prasi, out of vengeance for the Grand Master's torture and execution.

Reference

 * Assassin's Creed: Unity