Vicomte de Gambais

The Vicomte de Gambais (? - 1792) was a French aristocrat, who as a royalist acted as a spy for the Austrian monarchy during the French Revolution. Working for the Comte de Gambais' spy organization in Paris, the Viscount provided informations to the austrian forces in order to defeat the revolutionary forces and restore the French monarchy. In 1792, helping Georges Danton, Arno Dorian and others Assassins destroyed De Gambais' organization, ensuring that France would not be invaded by foreign troups.

Reference

 * Assassin's Creed: Unity