E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Prisoner of Chillon.
François de Bonnivard, a Frenchman confined for six years in the dungeon of the Chateau de Chillon, by Charles III. of Savoy. Lord Byron, in his poem so called, has welded together this incident with Dantes Count Ugolino. (See CHILLON.)