lore of the era. As a soldier, Sir John had a long and distinguished career, serving in many campaigns. Early in his career, he served for King Richard II in Scotland, fought for the Duke of Lancaster in Brittany, and fought for King Henry IV against Owain Glyndŵr during the Welsh Uprising. Sir John continued his military service for King Henry V and King Henry VI during the Hundred Years' War, most notably during the Battle of Agincourt, where he led the English vanguard on the march from Harfleur. He also served as a diplomat to the Armagnacs in France for his brother-in-law, Henry IV. Sir John held great favour through his relation and service to Henry IV, Henry V and Henry VI. Sir John amassed a considerable fortune and a great deal of land during his lifetime. He accomplished this through his marriage with Elizabeth, victories in tournaments, and the spoils of war. At the battle of Agincourt, Sir John captured Guillebert de Lannoy, and Louis, Count of Vendôme, whom he ransomed for large sums for money; and from 1429 to 1432, Henry VI granted custody of Charles, Duke of Orléans to Sir John. He profited greatly from the ransoms of prisoners, and used the spoils to build Ampthill Castle, Bedfordshire, and to buy Oyster Hill Manor from the Mayor of London, William Walworth. Sir John also became heavily involved in the mercantile community in London. King Henry IV made Sir John Cornwall a Knight of the Garter in 1409. He was created Baron Fanhope and a member of the King's Privy Council on 17 July 1433, and Baron Milbroke on 30 January 1442, by King Henry VI. Sir John's titles became extinct on his death, as he left no legitimate issue. Death Sir John died on 11 December 1443, at Ampthill Castle, in Bedfordshire, England. He was buried at Blackfriars Preachers, Ludgate, in Middlesex, England. After his death, Ampthill Castle became royal property. Eventually, it was where Catherine of Aragon lived from 1531 to 1533, while Henry VIII was attempting to divorce her. Ampthill Castle is ruined now, and the friary, along with Sir John's tomb, was destroyed during the Protestant Reformation. Upon his death, it was discovered that Sir John was owed £2,989 in Exchequer tallies by the crown (roughly £1.48 million or $2.39 million in today's money). In fiction Sir John features as a loquacious and