Duchy of Cleves
The principality was close to the Duchy of Cleves and Thorn, Netherlands. The Princes of Hornes held territory in what is now Belgium, Germany and the Netherlands. In addition, in France they possessed the villages of Auchy-au-Bois and Lestrem from 1722 to 1766, and Floringhem from 1774 to 1789. Hornes became allied to France, and thus suffered during the French Revolution.