Duchy to the north-west of the Île-de-France, bordered by the Channel; governed by the dauphin Charles, as Lieutenant of Normandy, until his accession to the French throne in 1364.
John of Gaunt (1340-99): duke of Lancaster, son of Philippa of Hainault and Edward III, king of England, who was a pretender to the Castilian throne by right of his marriage to Constanza, eldest daughter of Pedro I, king of Castile, who died in 1369. John of Gaunt was an important person in English political and military life during the last quarter of the fourteenth century, exercising great influence in domestic and foreign policy in England during the reign of Richard II, despite periods of unpopularity and strife with his royal nephew.
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