Abbot of Amboise
The Abbot of Amboise was the right-hand man of the Cardinal of Lorraine, the religious leader of the Catholics in France. He was strongly anti-Huguenot and a member of the conspiracy to assassinate Admiral Gaspard de Coligny in August 1572. When the plan failed, Marshal Gaspard de Saux-Tavannes blamed him for it and had him executed. His death was blamed on the Huguenots, a religious minority living in Paris at the time.
The Abbot was a physical double of the First Doctor. The Doctor's companion Steven thought at first that the Abbot was the Doctor in disguise.