In 1814-1815, before the decrees of the Vienna Congress were known, an extraordinary attempt was made by Philippe d'Auvergne of the British navy, the cousin and adopted son of the last duke, to revive the ancient duchy of Bouillon.
Weissenfels is a place of considerable antiquity, and from 1656 till 1746 it was the capital of the small duchy of Saxe-Weissenfels, a branch of the electoral house of Saxony, founded by Augustus, second son of the elector John George I.
In 1619 he received by bequest, ratified in 1620 by royal grant, the duchy of Angouleme.
In 1394 the countship came to the house of Orleans, a member of which, Francis I., became king of France in 1515 and raised it to the rank of duchy in favour of his mother Louise of Savoy.
The duchy afterwards changed hands several times, one of its holders being Charles of Valois, natural son of Charles IX.