The Château de Langeais is a 15th-century Flamboyant Gothic castle in Indre-et-Loire, France, built on a promontory created by the small valley of the Roumer River at the opening to the Loire Valley. Founded in 992 by Fulk Nerra, Count of Anjou, the castle was soon attacked by Odo I, Count of Blois. After the unsuccessful attack, the now-ruined stone keep was built; it is one of the earliest datable stone examples of a keep. Between 994 and 996, the castle was besieged unsuccessfully twice more. During the conflict between the counts of Anjou and Blois, the castle changed hands several times, and in 1038 Fulk captured the castle again.

Charles VIII, called the Affable, was King of France from 1483 to his death in 1498. He succeeded his father Louis XI at the age of 13. His elder sister Anne acted as regent jointly with her husband Peter II, Duke of Bourbon until 1491, when the young king turned 21 years of age. During Anne's regency, the great lords rebelled against royal centralisation efforts in a conflict known as the Mad War (1485–1488), which resulted in a victory for the royal government.