[Sidenote: 1492-95 Perkin and Margaret of Burgundy]

It certainly does not seem that on Perkin's appearance in Ireland he had
any active supporters outside that country, or that he caused any
perturbation in Henry's mind. Foreign princes, whether they regarded him as
genuine or as an impostor, would certainly not espouse his cause unless
they were at enmity with Henry. Even Charles VIII. made no haste to lend
him countenance until it seemed almost certain that there was to be a war
with England on a great scale; and he had no hesitation in dismissing the
pretender when peace was concluded; while the Spanish sovereigns, though
quite ready to intrigue against their Tudor ally, had no intention of
committing themselves to an open breach with him. The peace, however, which
dismissed Perkin from France, gave him a zealous adherent in the person of
Maximilian, who was now filled with a righteous animosity to Henry; and the
young lord of the Netherlands, his son Philip, Duke of Burgundy, declared
that he had no power to control the Dowager Margaret, dwelling on her own
estates. So Perkin made her court his head-quarters--a useful tool for the
weaving of Yorkist intrigues. Henry might, if he would, have legitimately
founded a _casus belli_ on this attitude, but he preferred to
institute a commercial war; from which, however, the English merchants
suffered little less than the Flemings.

In 1493 the Emperor died, and was in effect succeeded by the King of the
Romans, though his election to the Imperial throne did not take place for
some years. Maximilian, however, remained impecunious and inefficient;
Charles VIII. was giving his entire attention to his Italian projects; the
whole affair of Perkin Warbeck was carried on mainly below the surface on
both sides, by a process of mining and counter-mining. Henry was well
served by Sir Robert Clifford and others, who wormed themselves into the
confidence of the Yorkist plotters, revealing what they learnt to the King.