But it is more likely, as suggested by Richard Chandler (Life of Waynflete, 1811), that it was some Yorkist attack on him in progress in the papal court, to meet which he appointed next day 19 proctors to act for him.
Waynflete presided as chancellor at the parliament at Coventry in November 1459, which, after the Yorkist catastrophe at Ludlow, attainted the Yorkist leaders.
It was no doubt because of this that, three days before the Yorkist attack at Northampton, he delivered the great seal to the king in his tent near Delapre abbey, a nunnery by Northampton, on the 7th of July 1460 (Rot.
Offices and lands came to John Howard by reason of that fellowship. Henry VI., when restored, summoned him to parliament in 1470 as Lord Howard, a summons which may have been meant to lure him to London into Warwick's power, but he proclaimed the Yorkist sovereign on his return and fought at Barnet and Tewkesbury.
During the Wars of the Roses the town was loyal to Henry VI., and several of the Yorkist leaders were executed here after the battle of Wakefield.