Princes in the Tower becoming king, Henry married the princes' eldest sister, Elizabeth of York, to reinforce his claim to the throne. Not wanting the legitimacy of his wife or her claim as heiress of Edward IV called into question, prior to the marriage he had repealed the "Titulus Regius" which had previously declared the princes (and Elizabeth) illegitimate. Markham suggests the princes were executed under Henry's orders between 16 June and 16 July 1486, claiming that it was only after this date that orders went out to circulate the story that Richard had killed the princes, and that the princes' mother, Elizabeth Woodville,
Princes in the Tower account with the intention of writing about a moral point rather than a closely mirrored history. While More's account does rely on some firsthand sources, the account is generally taken from other sources. Additionally, More's account is one of the bases for William Shakespeare's "Richard III", which similarly indicts Richard for murdering the young princes. In 1675, some workmen remodelling the Tower of London dug up a wooden box containing two small human skeletons. The bones were found buried 10 ft under the staircase leading to the chapel of the White Tower. They were not the first children's skeletons found