Grant and his American collaborator argue that there is little evidence of resistance to Richard's rule (ignoring Buckingham's rebellion). They allow that there were rumours of his murdering the princes during his lifetime, but they decide that the rumours had little circulation, and attribute them to the Croyland Chronicle and to the Lord Chancellor of France, and ultimately to Tudor sympathiser John Morton. They also propose that Morton was the actual author of Thomas More's biography of Richard, suggesting that the incomplete manuscript found after More's death was an unfinished copy by More of Morton's lost original. They conclude that the princes probably remained alive throughout Richard's reign and were later killed by Henry.