l. viii. p. 353.

{1405.} But Northumberland, though he had been pardoned, knew that he
never should be trusted, and that he was too powerful to be cordially
forgiven by a prince whose situation gave him such reasonable grounds
of jealousy. It was the effect either of Henry's vigilance or good
fortune, or of the narrow genius of his enemies, that no proper concert
was ever formed among them: they rose in rebellion one after another;
and thereby afforded him an opportunity of suppressing singly those
insurrections which, had they been united, might have proved fatal to
his authority. The earl of Nottingham, son of the duke of Norfolk, and
the archbishop of York, brother to the earl of Wiltshire, whom Henry,
then duke of Lancaster, had beheaded at Bristol, though they had
remained quiet while Piercy was in the field, still harbored in their
breast a violent hatred against the enemy of their families; and they
determined, in conjunction with the earl of Northumberland, to seek
revenge against him. They betook themselves to arms before that powerful
nobleman was prepared to join them; and publishing a manifesto, in which
they reproached Henry with his usurpation of the crown and the murder of
the late king, they required that the right line should be restored,
and all public grievances be redressed. The earl of Westmoreland, whose
power lay in the neighborhood, approached them with an inferior force at
Shipton, near York; and being afraid to hazard an action, he attempted
to subdue them by a stratagem, which nothing but the greatest folly and
simplicity on their part could have rendered successful. He desired a
conference with the archbishop and earl between the armies: he heard
their grievances with great patience: he begged them to propose the
remedies: he approved of every expedient which they suggested: he
granted them all their demands: he also engaged that Henry should give
them entire satisfaction: and when he saw them pleased with the facility
of his concessions, he observed to them, that, since amity was now in
effect restored between them, it were better on both sides to dismiss
their forces, which otherwise would prove an insupportable burden to
the country. The archbishop and the earl of Nottingham immediately gave
directions to that purpose: their troops disbanded upon the field:
but Westmoreland, who had secretly issued contrary orders to his army,
seized the two rebels without resistance, and carried them to t