In these troublous times England looked towards York as the only one to be trusted, who then became Protector during the King's mental weakness. He imprisoned the Duke of Somerset. The latter as soon as he was free assembled an army, and was killed at the battle of St. Albans, the first War of the Roses. His followers, the Lancastrians, were defeated by the Duke of York, and the King made prisoner. Eventually York declared himself. By Act of Parliament he and his heirs were constituted successors to the throne of England after the death of Henry VI. Margaret, however, defeated the Yorkists in battle, in which York was slain. He left behind him three sons,--Edward, George, and Richard,--the first of whom later on deposed Henry VI. and became Edward IV. We have ventured to give this brief sketch of the origin of these rival claims, in that most of the cathedral cities were affected by the fortunes or misfortunes of their favoured party. Chester, in the years 1507, 1517, and 1550, suffered from a terrible visitation of the sweating sickness. From 1602 to 1605 the plague made it necessary to suspend all the city fairs, and to hold the assizes at Nantwich. This epidemic occurred again with great loss of life to the inhabitants, between 1647-48. During the Civil War this city of Chester endured great sacrifices for its loyalty to Charles I. The King came there in 1642, when the citizens gave him great pecuniary assistance. Not till after a memorable siege, lasting from 1643 to 1646, did the citizens agree to surrender. The garrison were allowed to march out with all the honours of war, the safety of the persons and property of the citizens with liberty of trade were secured, and the sanctity of the sacred buildings and their title-deeds preserved. [Illustration: CHESTER ST. WERBURGH STREET] Sir Charles Booth, in 1659, with the aid of the citizens, overcame the garrison of Charles II., then an exile, but was afterwards defeated by Lambert, Cromwell's general. The presence of the Duke of Monmouth, in 1683, stirred the populace to a tumult. Amongst other excesses the mob spent its fury in forcing the cathedral doors, breaking the painted glass, destroying the font, and other regrettable damage to this building. In 1688 the city was taken by the Roman Catholic lords, Molyneux and Ashton, for James II., who, after all, rendered further efforts useless by his abdication. Under William III. Chester was included in the six cities for the residence of an assay master, and was permitted to issue silver coinage. The last important military event that took place in this city was in the Rebellion of 1745, when it was fortified against the Pretender.