Jean de Lorrain is a hero unit available in the fifth Joan of Arc scenario, The Siege of Paris as well as the Scenario Editor in Age of Empires II: The Age of Kings. He has the appearance of a Bombard Cannon, though with improved stats.
Jean de Lorrain is based on a cardinal of Reims during the late 1500s and 1600s. Lorrain, however, has never been recorded to have contact with Joan of Arc. As a further side note, Lorrain was active in the French efforts to rid France of English presence, by supplying arms to some French knights.