On the summit of the hill that rises steeply from the left bank of the River Exe, and is crowned with the capital of Devon, some of the burghers of Exeter might have been met with, one spring day in 1470, gossiping about the king and Lord Warwick, and making observations on several hundreds of armed men, who, not without lance, and plume, and pennon, were escorting a youthful dame, of patrician aspect and stately bearing, toward the city gates. The mayor and aldermen were, probably, the reverse of delighted with the appearance of these fighting men. Indeed, the warlike strangers were adherents of Warwick and Clarence, escorting the young duchess who was daughter of one and wife of the other; and at that time, as was well known, both "The Stout Earl" and the fickle duke were at enmity with King Edward. The citizens of Exeter, however, made a virtue of necessity, and cheerfully enough admitted within their walls those whom they had not the power to exclude. At that time Isabel, Duchess of Clarence, was about to become, under mortifying circumstances, the mother of a son "born to perpetual calamity;" but, however delicate her situation, Lord Warwick's daughter, reared in the midst of civil strife, was probably less troubled than might be imagined with uneasiness as to the present or apprehension as to the future, as, with all honors due to her rank, she was conducted to the palace of the Bishop of Exeter. The Duchess of Clarence soon had need of her hereditary courage; for she had scarcely been lodged in the bishop's palace, and the lords who attended her in the houses of the canons, when Sir Hugh Courtenay, sheriff of Devon, took the opportunity of displaying his zeal in the king's service, raised an army in the vicinity, and marched toward Exeter to the assault of the city. Perceiving, however, that its reduction must be the work of time, the sheriff encamped his men around the walls, barricaded the roads, stopped every avenue by which provisions could have reached the garrison, and appeared prepared to proceed deliberately with the siege. Having taken these measures, Courtenay sent a messenger to the mayor, demanding that the gates should be opened forthwith.