Princes in the Tower household which stated: "the children should be together at one breakfast". James Gairdner, however, argues that it is unclear to whom the phrase "the children" alludes, and that it may not have been a reference to the princes. It may refer to Edward, Earl of Warwick (son of the Duke of Clarence) and Edward IV's two youngest daughters (Catherine and Bridget), all of whom were living under Richard's care at Sheriff Hutton. Other than their disappearance, there is no direct evidence that the princes were murdered, and "no reliable, well-informed, independent or impartial sources" for the associated events. Nevertheless, following
Princes in the Tower acted alone. First of all, if he were guilty of acting without Richard's orders it is extremely surprising that Richard did not lay the blame for the princes' murder on Buckingham after Buckingham was disgraced and executed, especially as Richard could potentially have cleared his own name by doing so. Secondly, it is likely he would have required Richard's help to gain access to the princes, under close guard in the Tower of London, although Kendall argued as Constable of England, he might have been exempt from this ruling. As a result, although it is extremely possible that he was