Henry IV of England king. The two dukes agreed to undergo a duel of honour (called by Richard II) at Gosford Green near Caludon Castle, Mowbray's home in Coventry. Yet before the duel could take place, Richard II decided to banish Henry from the kingdom (with the approval of Henry's father, John of Gaunt) to avoid further bloodshed. Mowbray himself was exiled for life. John of Gaunt died in February 1399. Without explanation, Richard cancelled the legal documents that would have allowed Henry to inherit Gaunt's land automatically. Instead, Henry would be required to ask for the lands from Richard. After some hesitation, Henry
Henry IV of England varied. In youth he seems to have been close to all of them, but rivalries with Henry and Thomas Beaufort proved problematic after 1406. Ralph Neville, who had married Henry's half-sister Joan Beaufort, remained one of his strongest supporters, and so did his eldest half-brother John Beaufort, even though Henry revoked Richard II's grant to John of a marquessate. Thomas Swynford, a son from Katherine's first marriage to Sir Hugh Swynford, was another loyal companion. Thomas was Constable of Pontefract Castle, where King Richard II is said to have died. Henry's half-sister Joan Beaufort was the grandmother of Edward IV