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In page Henry VII of England:

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Henry began taking precautions against rebellion while still in Leicester after Bosworth Field. Edward, Earl of Warwick, the ten-year-old son of Edward IV's brother George, Duke of Clarence, was the senior surviving male of the House of York.[7] Before departing for London, Henry sent Robert Willoughby to Sheriff Hutton in Yorkshire, to arrest Warwick and take him to the Tower of London.[10] Despite such precautions, Henry faced several rebellions over the next twelve years.[citation needed] The first was the 1486 rebellion of the Stafford brothers, abetted by Viscount Lovell, which collapsed without fighting.[11]