Isabel of Bavaria, 1371–1435, French queen, consort of Charles VI, daughter of the duke of Bavaria. After her marriage (1385) she was several times regent for her demented husband. Sympathizing with the enemies of France—the English and the Burgundians—in the Hundred Years War, she helped to bring about the Treaty of Troyes (1420), which disinherited her son (later Charles VII) in favor of Henry V of England.
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