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the legitimacy of his wife or her claim as heiress of Edward IV called into question, prior to the marriage he had repealed the "Titulus Regius" which had previously declared the princes (and Elizabeth) illegitimate.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 More's account was actually written by Archbishop Morton and that Tyrrell was induced to do the deed by Henry VII between June 16 and July 16, 1486, the dates of two general pardons that he received from the king. Richard's guilt was widely accepted by contemporaries. George Cely, Dominic Mancini, John Rous, Fabyan’s Chronicle, the Crowland Chronicler and the London Chronicle all noted the disappearance of the Princes, and all bar Mancini (who noted that he had no knowledge of what had happened) repeated rumours naming Richard as the murderer. Guillaume de Rochefort, Chancellor of France, named Richard as the