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 Rebellions continued throughout the first 10 years of Henry's reign, including the revolt of Owain Glyndŵr, who declared himself Prince of Wales in 1400, and the rebellion of Henry Percy, 1st Earl of Northumberland. The king's success in putting down these rebellions was due partly to the military ability of his eldest son, Henry of Monmouth, who later became king (though the son managed to seize much effective power from his father in 1410). In the last year of Henry's reign, the rebellions picked up speed. "The old fable of a living Richard was revived", notes one account, "and emissaries