>>3971447It was the younger brother, Richard of Shrewsbury, that had people claiming to be him. In both cases it was opponents of Henry VII using a kid who was almost certainly not the real prince to try to claim the throne. The elder brother, Edward V, had been known to be sick during his imprisonment, so everyone figured that he had died even if there had been no foul play.
But it's pretty certain that neither of them escaped. Their disappearance and the assumption that they had been murdered were troublesome rallying cries against Richard III, so if he could have produced any evidence or testimony that could have lessened the suspicion that he was a kinslayer, he would have. His reign was also cut incredibly short by having his head split open, which I'm inclined to believe was divine retribution for what he'd done.