[Sidenote: =Lambert Simnel.=] The earlier years of Henry's reign were much disturbed by petty rebellions, the last ground-swell of discontent and lawlessness which lingered on after the great tempest of the Wars of the Roses had abated. Richard III. had left behind him a few devoted partisans who had resolved never to submit; the chief were John de la Pole, Earl of Lincoln, who had been declared heir to the throne by the late king, and Lord Lovel, the sole survivor of the three favourites who had "ruled all England under the Hog." They were bold reckless men, ready to risk all for ambition and revenge. Before Henry had been a year on the throne, Lovel secretly collected a band of desperate friends, and tried to kidnap him while he was visiting York. Foiled in this scheme, Lovel fled to Flanders, where he was sheltered by Margaret, Duchess of Burgundy, the widowed sister of King Edward IV. With her and with Lincoln he concerted a second plan of rebellion. They resolved to try to rouse the wrecks of the Yorkist party in the name of Edward, Earl of Warwick, the son of Clarence, who had been put to death in 1478, and the only male heir of the house of York. This prince was in King Henry's hands, safely kept in custody in the Tower of London. Till they could liberate him they resolved to make an impostor assume his name and title. So they instructed a clever boy named Lambert Simnel, the son of an organ-maker at Oxford, to act the part of the young Clarence, reasoning that Henry would not dare to put the real prince to death, but would keep him alive in order to make the imposture clear, and so they could free the real Clarence if they succeeded, and dismiss the false one when he was no longer needed. [Sidenote: =Battle of Stoke.=]