Charles Lethbridge Kingsford

“ The next eighteen months were spent by John as lieutenant of Aquitaine, and it was not till November 1389 that he returned to England. By his absence he had avoided implication in the troubles at home. Richard, still insecure of his own position, welcomed his uncle, and early in the following year marked his favour by creating him duke of Aquitaine. John on his part was glad to support the king’s government; during four years he exercised his influence in favour of pacification at home, and abroad was chiefly responsible for the conclusion of a truce with France. ”

“ In July 1386 John left England with a strong force to win his Spanish throne. He landed at Corunna, and during the autumn conquered Galicia. Juan, who had succeeded his father Henry as king of Castile, offered a compromise by marriage. John of Gaunt refused, hoping for greater success with the help of the king of Portugal, who now married the duke’s eldest daughter Philippa. In the spring the allies invaded Castile. They could achieve no success, and sickness ruined the English army. ”

“ Though Richard at first believed it, the matter was disposed of by the friar’s death. However, the court party soon after concocted a fresh plot for the duke’s destruction; John boldly denounced his traducers, and the quarrel was appeased by the intervention of the king’s mother. The intrigue still continued, and broke out again during the Scottish campaign in 1385. John was not the man to be forced into treason to his family, but the impossibility of the position at home made his foreign ambitions more feasible. ”