Jacquerie
The Jacquerie was a popular revolt by peasants that took place in northern France in the early summer of 1358 during the Hundred Years' War. The revolt was centered in the valley of the Oise north of Paris and was suppressed after a few weeks of violence. This rebellion became known as "the Jacquerie" because the nobles derided peasants as "Jacques" or "Jacques Bonhomme" for their padded surplice, called a "jacque". The aristocratic chronicler Jean Froissart and his source, the chronicle of Jean le Bel, referred to the leader of the revolt as Jacque Bonhomme ("Jack Goodfellow"), though in fact the Jacquerie 'great captain' was named Guillaume Cale. The word jacquerie became a synonym of peasant uprisings in general in both English and French.
Background
After the capture of the French king (John II, Froissart's bon roi Jean "John the Good") by the English during the Battle of Poitiers in September 1356, power in France devolved fruitlessly among the Estates-General, King Charles II of Navarre and John's son, the Dauphin, later Charles V.