For 10 points, identify this conflict between rebels led by Henry "Hotspur" Percy and the army of England under King Henry IV.
One faction had supported its rival for four years prior to this event. The cause of it was the new king's bestowing lands in Cumbria promised to the group onto its rival instead. Most of the army recruited came from Cheshire, a region already hostile to the successor of Richard II. Occurring on July 21, 1403, near the river Severn, the rebel leader was disinterred, impaled and quartered to prove his death afterwards. For 10 points, identify this conflict between rebels led by Henry "Hotspur" Percy and the army of England under King Henry IV.
One faction had supported its rival for four years prior to this event.
Battle of {Shrewsbury}