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 male heir, but not the most senior in terms of agnatic descent from Edward III. Although he was heir to the throne according to Edward III's entail to the crown of 1376, Dr. Ian Mortimer has pointed out in his 2008 biography of Henry IV that this entail had probably been supplanted by an entail made by Richard II in 1399 (see Ian Mortimer, "The Fears of Henry IV", appendix two, pp. 366–9). Henry thus had to overcome the superior claim of the Mortimers in order to maintain his inheritance. This difficulty compounded when the Mortimer claim was merged with