Henry Percy (Hotspur) and his father, the earl of Northumberland, thought their services ill-requited, and finally made common cause with the partisans of Mortimer and the Welsh.
Six years later he was associated with his father in the wardenship of the eastern march of Scotland,, and his zeal in border warfare won the name of Hotspur for him from his opponents.
Hotspur was released on the payment of a heavy ransom, to which Richard II.
During the first year of Henry's reign Hotspur further was appointed justiciar of North Wales and constable of the castles of Chester, Flint, Conway, Denbigh and Carnarvon.
Northumberland and Hotspur barred their way at Millfield, near Wooler, and the Scots were compelled to fight at Humbledon, or Homildon Hill, on the 14th of September.
The English archers were provided with a good target in the masses of the Scottish spearmen, and Hotspur was restrained from charging by his ally, George Dunbar, earl of March.
It is related that when he arrived Henry asked for Douglas, and Hotspur demanded in return that his brother-in-law, Edmund Mortimer, should be allowed to ransom himself from Owen Glendower, with whom he was a prisoner.
This was late in 1402, and in 1403 Hotspur issued a proclamation in Cheshire stating that Richard II.
Hotspur was killed, the earls of Douglas and Worcester, Sir Richard Venables of Kinderton, and Sir Richard Vernon were captured, and the rebel army dispersed.
Holinshed's Chronicle was the chief source of Shakespeare's account of Hotspur in Henry IV.
' Hotspur ' against the turret of H.M.S.
On a perfectly calm day the ' Hotspur ' fired several rounds at the ' Glatton's ' turret and missed it."
Owen had already been intriguing with Henry Percy (Hotspur), who during 1401 held command in north Wales, and with Percy's brother-in-law, Sir Edmund Mortimer.
The old earl northand set himself to subdue Yorkshire; his son Hotspur west, and the earl of Douglas marched south and opened communication with the Welsh.
Hotspur was slain, Worcester taken and beheaded, Douglas desperately wounded (July 23, 1403).