Angoulême (L'Angoumois) in western France was part of the Carolingian Empire as the kingdom of Aquitaine. Under Charlemagne's successors, the local Count of Angoulême was independent and was not united with the French crown until 1308. By the terms of the Treaty of Brétigny (1360) the Angoumois, then ruled by the Counts of Angoulême, was ceded as English territory to Edward III. In 1371 it became a fief of the Duke of Berry, before passing to Louis I, Duke of Orleans, both of whom were cadets of the French royal family. From then on it was held by cadets of the Valois House of Orleans, until Francis, Count of Angoulême, became King of France in 1515. Angoumois was definitively incorporated into the French crown lands, as a duchy.
(Text) CC BY-SA
