Tanneguy du Châtel

Tanneguy III du Châtel (also spelt Tanguy; 1369–1449) was a Breton knight who fought in the Armagnac–Burgundian Civil War and the Hundred Years' War. A member of the Armagnac party, he became a leading adviser of King Charles VII of France, and was one of the murderers of Duke John the Fearless of Burgundy in 1419.