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 royal tomb, so it was felt best to leave the medieval mystery unsolved for at least the next few generations. The 2012 Leicester archaeological dig has prompted renewed interest in re-excavating the skeletons of the "two princes", but Queen Elizabeth II has not granted the approval required for any such testing of an interred royal. The absence of hard evidence of what happened to the Princes has led to a number of theories being put forward. The most common theory is that they were murdered close to the time that they disappeared, and among historians and authors who accept the