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 his nephews would help secure his position or make him more acceptable to his subjects." An initial uprising in September 1483, aimed at deposing Richard and restoring Edward V to the throne, was not stopped by rumours of Edward's murder. Instead, the rebels rallied around Henry Tudor as a potential alternative candidate, who was, as Horrox notes, "an inconceivable choice if Edward V and his brother were thought to be still available." Anthony Cheetham, who considered Richard likely did have the princes murdered, commented that it was "a colossal blunder. Nothing else could have prompted the deflated Woodvilles to hitch