This king had Richard Scrope, archbishop of York, executed for conspiring with the duke of Northumberland to rebel. Together 
This king had Richard Scrope, archbishop of York, executed for conspiring with the duke of Northumberland to rebel. Together with Thomas Mowbray, this man led an opposition group called the lords appellants. During his last days, his court was split between factions loyal to his successor and those loyal to Thomas Arundel, archbishop of Canterbury. This king's achievements included the suppression of the (*) Owen Glendower rebellion early in his rule, as well as the defeat of a rebellion raised by Henry Percy, the earl of Northumberland known as Hotspur. The eldest surviving son of John of Gaunt, for 10 points, identify this king who succeeded his cousin Richard II, the first of three Lancastrian kings of England.
This king had Richard Scrope, archbishop of York, executed for conspiring with the duke of Northumberland to rebel.
Henry IV [or Henry Bolingbroke; accept Henry of Lancaster before it’s mentioned; prompt on Henry]