When the riot between the townsmen of Dover and the train of Eustace of Boulogne resulted in the dispersion of the family of Godwin, Tostig, then in the pride of early manhood, accompanying his father to Flanders, wedded Judith, daughter of Count Baldwin, and sister of Matilda, whom William the Norman, after vanquishing so many obstacles, received as his bride. This high alliance would seem to have rendered Tostig's pride intolerable; and he returned to England with ridiculous notions of his hereditary claims, and absurd ideas of his personal importance. It was a period, however, when the members of Godwin's house were encouraged to conduct themselves as if England had existed solely for their advantage; and when Siward died, leaving one son too young to succeed to his authority, Tostig claimed and received the earldom of Northumberland. Accustomed to the sway of such chiefs as Uchtred and Siward, the men of the north were not perhaps particularly pleased with their new earl. But whether or not, Tostig soon gave them cause to be discontented. Cruel and tyrannical in his notions, he appeared at York with the tax-gatherer on one hand, and the executioner on the other, and treated the Northumbrians as if he had been a conqueror, and they had been the inhabitants of a conquered province. Brooking no restraint, he violated old customs and laws, levied enormous imposts, and violently put to death those who refused to submit to his exactions. Gamel, the son of Orm, and Ulf, the son of Dolphin, are mentioned as among the thanes of high rank whom, with fell treachery, he allured to the castle of York, and caused to be put to death, under his own roof, and in his own chamber. Of all people, the Northumbrians were the least likely to tolerate such tyranny. Meeting at Gamelburn, Dunstan, son of Agelnoth, and Gloricern, son of Eadulf, with two hundred soldiers, raised the standard of insurrection; and, under the command of their native chiefs, the men of the north sprang to arms to avenge their slaughtered countrymen and fight for their ancient liberties. Marching to York, Dunstan and Gloricern prepared to seize the tyrant in his castle. Tostig was in the capital of the north, when he suddenly became aware that armed men were approaching with hostile intent. Unprepared for resistance, and shrinking from the peril he had defied, the son of Godwin resolved to fly; and, escaping with some of the chief ministers of his violence and injustice, he left his officers and servants to contend with the men whom he had exasperated. The Northumbrians, taking possession of York, seized the arsenal and treasury, and, assembling a council, formally deposed Tostig, and elected Morkar, one of the sons of Algar, and one of the grandsons of Leofric and Godiva, in his stead.