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 Portuguese document suggests Buckingham as the guilty party, stating "...and after the passing away of king Edward in the year of 83, another one of his brothers, the Duke of Gloucester, had in his power the Prince of Wales and the Duke of York, the young sons of the said king his brother, and turned them to the Duke of Buckingham, under whose custody the said Princes were starved to death." A document dated some decades after the disappearance was found within the archives of the College of Arms in London in 1980; this stated that the murder "be the