Since Suffolk had never been formally convicted, he was not attainted, but the royal grants which had given John de la Pole such good prospects were now to the crown. And although John inherited his father's dukedom of Suffolk, he had lost the various offices that he had held, such as the Constableship of Wallingford Castle. On top of this, due to his mother retaining one-third of his father's estate in dower, his expectations from the dukedom could only have been even smaller. His income has been estimated at less than £280 per annum, which was less than the minimum required for an earl, let alone a duke.