After meeting with some successes at sea, Warwick landed in Kent, with the Earl of Salisbury and the Earl of March, eldest son of the Duke of York; and being met by the Primate, by Lord Cobham, and other persons of distinction, he marched, amid the acclamations of the people, to London. The city immediately opened its gates to him; and, his troops increasing on every day's march, he soon found himself in a condition to face the royal army, which hastened from Coventry to attack him. The battle was fought at Northampton, and was soon decided against the royalists by the infidelity of Lord Grey of Ruthin, who, commanding Henry's van, deserted to the enemy during the heat of action, and spread a consternation through the troops. The Duke of Buckingham, the Earl of Shrewsbury, the Lords Beaumont and Egremont, and Sir William Lucie were killed in the action or pursuit; the slaughter fell chiefly on the gentry and nobility; the common people were spared by orders of the Earls of Warwick and March. Henry himself, that empty shadow of a king, was again taken prisoner; and as the innocence and simplicity of his manners, which bore the appearance of sanctity, had procured him the tender regard of the people, the Earl of Warwick and the other leaders took care to distinguish themselves by their respectful demeanor toward him. A parliament was summoned in the King's name, and met at Westminster, where the Duke soon after appeared from Ireland. This Prince had never hitherto advanced openly any claim to the crown. He advanced toward the throne; and being met by the Archbishop of Canterbury, who asked him whether he had yet paid his respects to the King, he replied that he knew of none to whom he owed that title. He then stood near the throne, and, addressing himself to the House of Peers, he gave them a deduction of his title by descent, and pleaded his cause before them. The lords remained in suspense, and no one ventured to utter a word. Richard was much disappointed at their silence; but, desiring them to reflect on what he had proposed to them, he departed the house. The peers, after deliberating, declared the title of the duke of York to be certain and indefeasible; but in consideration that Henry had enjoyed the crown, without dispute or controversy, during the course of thirty-eight years, they determined that he should continue to possess the title and dignity during the remainder of his life; that the administration of the government, meanwhile, should remain with Richard; that he should be acknowledged the true and lawful heir of the monarchy; that everyone should swear to maintain his succession, and it should be treason to attempt his life. The act thus passed with the unanimous consent of the whole legislative body.