This article examines a document among William Worcester's papers at the British Library. It is argued that the document, a selective list of archbishops of Canterbury and bishops of Bath and Wells, was intended to form the basis for a glazing scheme to be commissioned by John Stafford, archbishop of Canterbury. It is suggested that this may have been intended for Croydon Palace in Surrey. An analysis of the list provides information not only about Stafford's interests in this commission but his artistic patronage in general. The document is set alongside the commissions of Stafford's episcopal contemporaries to draw wider conclusions about episcopal patronage of the visual arts in the fifteenth century.