While the King continued at Gloucester, Malcolm King of Scotland came to his court, with intentions to settle and confirm the late peace between them. It happened that a controversy arose about some circumstances relating to the homage which Malcolm was to pay, in the managing whereof King William discovered so much haughtiness and disdain, both in words and gestures, that the Scottish prince, provoked by such unworthy treatment, returned home with indignation; but soon came back at the head of a powerful army, and, entering Northumberland with fire and sword, laid all waste before him. But as all enterprises have in the progress of them a tincture of those passions by which they were spirited at first, so this invasion begun upon private revenge, which is a blind ungovernable passion, was carried on with equal precipitation, and proved to be ruinous in the event; for Robert Mowbray, Earl of Northumberland, to prevent the destruction of his own country, where he had great possessions, gathering what forces he could suddenly raise, and without waiting any directions from the King, marched against the Scots, who were then set down before Alnwick Castle: there, by an ambush, Malcolm and his eldest son Edward were slain, and the army, discouraged by the loss of their princes, entirely defeated. This disaster was followed in a few days by the death of Queen Margaret, who, not able to survive her misfortunes, died for grief. Neither did the miseries of that kingdom end till, after two usurpations, the surviving son of Malcolm, who had fled to England for refuge, was restored to his crown by the assistance of King William.