 The rise of the Percies was stopped, however, in 1402 when they rebelled against Henry, (partly because of the rewards garnered by the Nevilles), and they never really recovered their position thereafter.The Earl of Westmorland, who had fought against the Percies at the Battle of Shrewsbury, where the Percies were defeated, was rewarded with the wardenship of the West March.This low-level regional Percy-Neville feud turned into a national-level blood-feud in 1455, when Richard Neville, 5th Earl of Salisbury went over to the Yorkist cause of Richard of York, 3rd Duke of York (whose wife was Salisbury's sister, Cecily Neville).