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 it would discourage rebellion. Holinshed's Chronicles, written in the second half of the 16th century, claims that the princes were murdered by Richard III. The chronicles were one of the main sources used by William Shakespeare for his play "Richard III", which also portrays Richard as the murderer, in the sense that he commissions Tyrrell to have the boys killed. A. J. Pollard believes that the chronicle's account reflected the contemporary "standard and accepted account", but that by the time it was written "propaganda had been transformed into historical fact". It should also be noted that Thomas More wrote his