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the legitimacy of his wife or her claim as heiress of Edward IV called into question, prior to the marriage he had repealed the "Titulus Regius" which had previously declared the princes (and Elizabeth) illegitimate.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 Richard took the throne for himself and the boys disappeared. It is unclear what happened to the boys after they disappeared in the Tower. It is generally assumed that they were murdered; a common hypothesis is that they were killed by Richard in an attempt to secure his hold on the throne. Their deaths may have occurred some time in 1483, but apart from their disappearance, the only evidence is circumstantial. As a result, several other hypotheses about their fates have been proposed, including the suggestion that they were murdered by Henry Stafford, 2nd Duke of Buckingham or Henry VII,