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
Lancaster Castle On the death of Henry II, the Honour passed to his son, Richard the Lionheart, who gave it to his brother, Prince John, in the hope of securing his loyalty. One of the functions castles served was as a prison; the first record of the castle being used in this way was in 1196, although the role became much more important after the English Civil War. Since the 12th century, the monarch appointed a sheriff to maintain the peace in Lancashire, a role usually filled by the duke and based at the castle. In the late 12th and early 13th