This article compares two medieval cults at the royal free chapel of Wimborne minster, Dorset: the cult of St. Cuthburga, the minster’s patronal saint, and the cult of Henry VI, which was probably introduced there by Lady Margaret Beaufort. Using the parish’s exceptional churchwardens’ accounts, the fortunes and ultimately the fate of the two cults are compared in detail. Although the cult of Henry VI appears to have made little impact, the cult of St. Cuthburga remained popular until 1538, both with the parishioners and with pilgrims from the local area; other evidence suggests that Cuthburga was also the subject of sophisticated literate devotions within the parish and its environs. The article is a contribution to the existing literature on local and royal saints, and also the first to examine the relationship between royal administration and popular devotion at one of the king’s own free chapels.