 Soon young Edward, a potential York claimant to the throne, was moved to the Tower of London.Edward was briefly displayed in public at St Paul's Cathedral in 1487 in response to the presentation of the impostor Lambert Simnel as the "Earl of Warwick" to the Irish lords.Shortly thereafter, probably in November 1487, Henry VII gave Margaret in marriage to his cousin, Sir Richard Pole, whose mother was half-sister of the king's mother, Margaret Beaufort.