Elizabeth of York take Richard with him, so the boy could reside in the Tower and keep his brother Edward company. Elizabeth Woodville, under duress, eventually agreed. Two months later, on 22 June 1483, Edward IV's marriage was declared invalid. It was claimed that Edward IV had, at the time of his marriage to Elizabeth Woodville, already been betrothed to Lady Eleanor Butler. Parliament issued a bill, "Titulus Regius" ("The Title of the King"), in support of this position. This measure legally bastardised the children of Edward IV, made them ineligible for the succession, and declared Gloucester the rightful king, with the right
Elizabeth Woodville offered the throne and became King Richard III. Edward V, who was no longer king, and his brother Richard, Duke of York, remained in the Tower of London. There are no recorded sightings of them after the summer of 1483. Now referred to as Dame Elizabeth Grey, she and the Duke of Buckingham (a former close ally of Richard III and now probably seeking the throne for himself) now allied themselves with Lady Margaret Stanley (née Beaufort) and espoused the cause of Margaret's son Henry Tudor, a great-great-great-grandson of King Edward III, the closest male heir of the Lancastrian claim