One of de la Pole's first commissions under the new regime was to accompany Edward on his campaign against the Scots in winter 1462, although he had returned to Norwich by early the next year. Suffolk also attended the reinterment of the king's uncle and cousins, Richard, Earl of Salisbury and his son Thomas at Bisham Priory in 1463. Soon after, Suffolk's dukedom was confirmed to him by Edward IV in letters patent dated 23 March (possibly, it has been suggested, on account of contemporary uncertainty as to whether he ever had been downgraded in 1460). He actually took seisin of his estates six months before coming of age, and was absolved from having to prove his age as was the legal custom. He was a trier of petitions at the parliament later that year. In 1465, the king granted Suffolk an annuity of 100 marks (nearly £67) a year, although this was only during the life of his wife, the king's sister. It may only have been compensation for lands lost by Edward's need to endow his queen with a landed estate. Two years later, in a clear mark of royal favour, his eldest son John was created Earl of Lincoln. Suffolk himself regained his father's Wallingford and Chiltern Hundreds offices, with a £40 per annum salary for it. In 1467, he acted as feoffee for his sister-in-law (the King's sister), Anne, Duchess of Exeter.