Jacqueline, of the House of Wittelsbach, was a noblewoman who ruled the counties of Holland, Zeeland and Hainaut in the Low Countries from 1417 to 1433. She was also Dauphine of France for a short time between 1415 and 1417 and Duchess of Gloucester in the 1420s, if her marriage to Humphrey, Duke of Gloucester, is accepted as valid.

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