The quarrel soon became personal as well as political.

The English prince wrote to the duke of Burgundy, complaining of the opposition made to his pretensions; and though, in the main, he employed amicable terms in his letter, he took notice of some falsehoods into which, he said, Philip had been betrayed during the course of these transactions.

This unguarded expression was highly resented: the duke of Burgundy insisted that he should retract it; and mutual challenges and defiances passed between them on this occasion.[*] * Monstrelet, vol.ii.p.

19, 20, 21.
The duke of Bedford could easily foresee the bad effects of so ill-timed and imprudent a quarrel.

All the succors which he expected from England, and which were so necessary in this critical emergence, were intercepted by his brother, and employed in Holland and Hainault: the forces of the duke of Burgundy, which he also depended on, were diverted by the same wars: and besides this double loss, he was in imminent danger of alienating forever that confederate whose friendship was of the utmost importance, and whom the late king had enjoined him, with his dying breath, to gratify by every mark of regard and attachment.