Princes in the Tower act stated that Edward IV and Elizabeth Woodville's marriage was invalid because of Edward's pre-contract of marriage with Lady Eleanor Butler. Gloucester was crowned King Richard III of England on 3 July. The declaration of the boys' illegitimacy has been described by Rosemary Horrox as an ex post facto justification for Richard's accession. Dominic Mancini, an Italian friar who visited England in the 1480s and who was in London in the spring and summer of 1483, recorded that after Richard III seized the throne, Edward and his younger brother Richard were taken into the "inner apartments of the Tower" and
Princes in the Tower current historians, including David Starkey, Michael Hicks, Helen Castor and A. J. Pollard regard Richard himself as the most likely culprit. There was no formal accusation against Richard III on the matter; the Bill of Attainder brought by Henry VII made no definitive mention of the Princes in the Tower, but it did accuse Richard of "the unnatural, mischievous and great perjuries, treasons, homicides and murders, in shedding of infant's blood, with many other wrongs, odious offences and abominations against God and man". The "shedding of infant's blood" may be an accusation of the Princes' murder. Hicks speculated that it