Knight Prisoner Duke of Suffolk
He was the son of John de la Pole, 2nd Duke of Suffolk (1442 - 1492) and Elizabeth Plantagenet (Elizabeth of York, Duchess of Suffolk) (1444 - 1504). Around 1497, he married Katherine Stourton, daughter of William Stourton, 2nd Baron Stourton and Margaret Chidiocke, but they had no issue.
As nephews of Edward IV the de la Pole family had a much stronger hereditary claim to the throne than Henry VII, who was descended from an illegitimate son of John of Gaunt. The fact that William did not flee with them might have been seen as evidence that he was blameless, but the King was clearly taking no chances.
