King Henry showed extraordinary moderation in dealing with the insurgents: he fined Cornwall heavily, but ordered no executions. He promised Warbeck his life if he would leave his sanctuary, and when the impostor gave himself up, he was merely placed in honourable custody in the Tower. He was only made to publish the confession of his fraud, and to give a full account of his real life and adventures. Perkin might have lived to old age, like Lambert Simnel, if he had been content to keep quiet. But he made two attempts to escape from England, which roused the king's wrath. On the second occasion he persuaded another State prisoner, Edward of Clarence, the true heir of York, to fly with him; but they were detected, and the king, provoked at last, executed Warbeck, and made the unfortunate Prince Edward share his fate (1499). Perkin had merited his end, but it is impossible to pardon Henry's dealings with the unlucky heir of Clarence, who had been a prisoner ever since Richard III. sent him to the Tower sixteen years before. There is no doubt that Henry was glad of the excuse to lop off another branch from the stem of York. Noting this fact, the next heir of that line, Edmund de la Pole, brother of the Earl of Lincoln who fell at Stoke, wisely fled from England, lest his royal blood should be his ruin. [Sidenote: =Suppression of livery and maintenance.=] After Warbeck's failure, King Henry was for the future free from the danger of dynastic risings against the house of Tudor. He was able to develop his policy both at home and abroad without any further danger of insurrections. In domestic matters he strove very successfully to put an end to the turbulence which had been left behind from the times of the civil war. His chief weapon was legislation against "livery and maintenance," the evil custom by which a great lord gave his badge to his neighbours, and undertook to support them in their quarrels and lawsuits. This abuse of local influence was sternly suppressed, and no man, however great, was permitted to keep about him more than a limited number of liveried retainers. It is on record that Henry punished his oldest friend and supporter, the Earl of Oxford, for breaking this rule. On the occasion of a royal visit to his castle of Hedingham, Oxford received the king at the head of many hundreds of his followers, all clad in the de Vere livery, and was promptly made to pay a heavy fine for his ostentation. [Sidenote: =The Star Chamber founded.=]