 His foundation was confirmed by Pope Nicholas V by a bull dated 27 February 1451, and a few years later some alterations made in the foundation-charter received the approval of Pope Pius II by bulls dated 13 September and 21 October 1458.Shortly afterwards Kennedy established the Grey Friars monastery in St Andrews.He also built a large vessel called the "Saint Salvator", which was frequently used by royal personages, and regarded as a marvel, until it was wrecked near Bamburgh while on a voyage to Flanders in 1472.