" Perhaps most surprising of all, the deposed and imprisoned King Henry was not murdered. This had been the fate of the two Plantagenet kings who had lost their crowns before him: Edward II died while in custody at Berkeley Castle in 1327, while Richard II was killed at Pontefract in 1400, the year following his deposition. Ironically, Henry’s survival was perhaps a mark of his uniquely pitiful and ineffectual approach to kingship—for it was much harder to justify killing a man who had done nothing evil or tyrannical, but had earned his fate thanks to his dewy-eyed simplicity. Permitting Henry to remain alive was a bold decision that Edward IV would come to regret. But in 1465 it must have struck the king as a brave and magnanimous act. "

― Dan Jones , The Wars of the Roses: The Fall of the Plantagenets and the Rise of the Tudors