Princes in the Tower "the murther of his nephews towards the world", indicating that the boys did indeed meet their end during Richard's days. It is also unlikely that the princes would have been kept alive in secret by Richard for 2 years after their last sighting while rumours of his responsibility for their murder circulated. Some writers have also accused John Howard, 1st Duke of Norfolk; Margaret Beaufort, Henry VII's mother; and Jane Shore (Edward IV's mistress). Pollard writes of these theories: "None deserve serious consideration. The problem with all these accusations is that they beg the question of access to the Tower
Princes in the Tower This version of events is accepted by Alison Weir and Hicks notes that his successful career and rapid promotion after 1483 'is consistent with his alleged murder of the princes'. However, the only record of Tyrrell's confession is through More, and "no actual confession has ever been found". Pollard casts doubts on the accuracy of More's accounts, suggesting it was "an elaboration of one of several circulating accounts"; however, he does not discount the possibility of it being "just his own invention", pointing to the "clear similarities to the stories of the Babes in the Wood". Clements Markham suggests that