Cornish army marched straight on London, picking up some supporters in Devon and Somerset on their way, including a discontented baron, Lord Audley, whom they made their captain. Battle of Blackheath. Execution of Warbeck and Edward of Clarence. So precarious was the hold of Henry VII. on the throne that he was in great danger from this outbreak of mere local turbulence. The rebels swept over five counties unopposed, and were only stopped and beaten in a hard fight on Blackheath, when they had reached the gates of London. Audley, the farrier and the lawyer were all captured and executed (June 18, 1497). But the crisis was not yet at an end. Warbeck, hearing of the rising, but not of its suppression, had left Scotland, and appeared in Devonshire in August. He rallied the wrecks of the west country rebels, and presently appeared before the gates of Exeter with nearly 8000 men. But the citizens held out against him, and presently the approach of the royal army was reported. The pretender led off his horde to meet the relieving force, but when he reached Taunton he found that his followers were so dispirited that disaster was certain. Thereupon he absconded by night, and took sanctuary in the abbey of Beaulieu. He offered to confess his imposture if he were promised his life, and the king accepted the terms. First at Taunton and again at Westminster, Perkin publicly recited a long narrative of his real parentage, his frauds and his adventures. He was then consigned to not over strict confinement in the Tower, and might have fared no worse than Lambert Simnel if he had possessed his soul in patience. But in the next year he corrupted his warders, broke out from his prison, and tried to escape beyond seas. He was captured, but the king again spared his life, though he was placed for the future in a dungeon "where he could see neither moon nor sun." Even this did not tame the impostor's mercurial temperament. In 1499 he again planned an escape, which was to be shared by another prisoner, the unfortunate Edward of Clarence, earl of Warwick, whose cell was in the storey above his own. But there were traitors among the Tower officials whom they suborned to help them, and the king was warned of the plot. He allowed it to proceed to the verge of execution, and then arrested both the false and the true Plantagenet. Evidence of a suspicious character was produced to show that they had planned rebellion as well as mere escape, and both were put to death with some of their accomplices. Warbeck deserved all that he reaped, but the unlucky Clarence's fate estranged many hearts from the king. The simple and weakly young man, who had spent fifteen of his twenty-five years in confinement, had, in all probability, done no more than scheme for an escape from his dungeon. But as the true male heir of the house of Plantagenet he was too dangerous to be allowed to survive. Establishment of the Tudor dynasty.