John of Gaunt return for a large annual payment and the marriage of their daughter Catherine to John of Trastámara's son Henry. John left Portugal for Aquitaine, and he remained in that province until he returned to England in November 1389. This effectively kept him off the scene while England endured the major political crisis of the conflict between Richard II and the Lords Appellant, who were led by John of Gaunt's younger brother Thomas of Woodstock, Duke of Gloucester. Only four months after his return to England, in March 1390, Richard II formally invested Gaunt with the Duchy of Aquitaine, thus providing
England in the Late Middle Ages was too ill to contribute to the war or government and returned to England where he soon died: the son of a king and the father of a king, but never a king himself. Prince Edward's brother John of Gaunt, 1st Duke of Lancaster assumed leadership of the English in France. Despite further chevauchées, destroying the countryside and the productivity of the land, his efforts were strategically ineffective. The French commander, Bertrand Du Guesclin adopted Fabian tactics in avoiding major English field forces while capturing towns, including Poitiers and Bergerac. In a further strategic blow, English dominance at sea was