Edward of Norwich, 2nd Duke of York by a French chronicler to have betrayed to the king a conspiracy at the end of 1399 by a group of Richard II's former favourites who planned to murder Henry IV and his sons at a jousting tournament at Windsor Castle on 6 January 1400. But according to James Tait, contemporary English sources that describe the conspiracy make no mention of Edward, and his role in it is open to question. In October 1400, the king made Edward Keeper of North Wales, and on 5 July 1401, his lieutenant in Aquitaine. On 1 August 1402, Edward's father died, and he
Windsor Castle "self-consciously aesthetic, muscled, martial architecture". Edward placed William of Wykeham in overall charge of the rebuilding and design of the new castle and whilst work was ongoing Edward stayed in temporary accommodation in the Round Tower. Between 1350 and 1377 Edward spent £51,000 on renovating Windsor Castle; this was the largest amount spent by any English medieval monarch on a single building operation, and over one and a half times Edward's typical annual income of £30,000. Some of the costs of the castle were paid from the results of ransoms following Edward's victories at the battles of Crécy, Calais and