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 long as they were alive. The boys could have been used by Richard's enemies as figureheads for rebellion. Rumours of their death were in circulation by late 1483, but Richard never attempted to prove that they were alive by having them seen in public, which strongly suggests that they were dead by then. However, he did not remain silent on the matter. Raphael Holinshed, in his "Chronicles of England, Scotland and Ireland", written in 1577, reports that Richard, "what with purging and declaring his innocence concerning the murder of his nephews towards the world, and what with cost to obtain