Wars of the Roses Thomas Bourchier, the Archbishop of Canterbury, then persuaded Elizabeth Woodville to allow her younger son, the 9-year-old Richard, Duke of York, to join Edward in the Tower. Having secured the boys, Robert Stillington, Bishop of Bath and Wells then alleged that Edward IV's marriage to Elizabeth Woodville had been illegal and that the two boys were therefore illegitimate. Richard then claimed the crown as King Richard III. The two imprisoned boys, known as the "Princes in the Tower", disappeared and are assumed to have been murdered. There was never a trial or judicial inquest on the matter. Perkin Warbeck claimed
Princes in the Tower to coronation. On 16 June, he was joined by his younger brother Richard, Duke of York, who was previously in sanctuary. At this point the date of Edward's coronation was indefinitely postponed by their uncle, Gloucester. On Sunday 22 June, a sermon was preached at Saint Paul's Cross claiming Gloucester to be the only legitimate heir of the House of York. On 25 June, "a group of lords, knights and gentlemen" petitioned Richard to take the throne. Both princes were subsequently declared illegitimate by Parliament; this was confirmed in 1484 by an Act of Parliament known as "Titulus Regius". The