Bouillon

Bouillon was a small Ardennes lordship centred on its castle on the Semois. Godfrey of Bouillon sold it to the Prince-Bishopric of Liège in 1095; in 1337 Prince-Bishop Adolf II of the Mark governed it.

In 1415 the bishop enfeoffed the castle to the House of La Marck, whose members styled themselves dukes from 1492. The title passed to La Tour d'Auvergne in 1594. The Treaties of Nijmegen made Bouillon sovereign under French protection in 1678; France annexed it in 1795, and after 1815 it joined Luxembourg before passing to Belgium in 1830.