Alderman Gregory, whose chronicle affords us a vivid picture of contemporary events, and who was called upon to serve the office of mayor of the city the following year, confesses that the procession on this occasion would have been a gay and glorious sight, "if hit hadde ben in Fraunce, but not in Ingelonde," for it boded little good.(851) The Duke of Somerset did not long remain in prison, for immediately after Christmas he was appointed captain of Calais. In 1451 the disasters which followed the English arms in France, when Calais was again threatened, were made an occasion for another attempt by York to crush his rival. He openly avowed his determination to proceed against Somerset, and, joined by the Earl of Devonshire and Lord Cobham, marched to London (Jan., 1452). Henry at once prepared to march against his cousin. The duke had hoped that through the influence of his party within the city, the gates would have been flung open on his approach. In this he was disappointed. The majority of the citizens were still loyal to Henry, and by his orders entrance was denied the duke, who thereupon withdrew to Dartford, whilst the king’s forces encamped at Blackheath. (M454) For a time civil war was avoided, the king promising that Somerset should be again committed to custody until he should answer such charges as York should bring against him. The king, however, failed to keep his word. Somerset was allowed to remain in power, and York was only allowed his liberty after he had consented to swear public allegiance to the king in St. Paul’s Church. Any stronger measures taken against him would probably have provoked disturbance in the city.(852) (M455) Henry’s mind had never been strong, and in the following year (1453) it entirely gave way. In October the queen bore him a son, after eight years of married life, but though the infant was brought to his father, Henry gave no signs of recognising his presence. The illness of the king, and the birth of an heir to the crown, were events which materially affected the fortunes of the Duke of York. In November the civic authorities prepared for emergencies; every citizen was to provide himself with armour, but he was strictly enjoined to be guarded in his conversation, and not to provoke tumult by showing favour to this or that lord. Even a proposal that the mayor and aldermen should pay a visit of respect to the Duke of York was rejected as impolitic at the present juncture.(853) (M456)