Gregory T. Clark is Professor of Art History at Sewanee, University of the South. He received his doctorate from Princeton University and was Assistant Curator of Medieval and Renaissance Manuscripts at the Pierpont Morgan Library in New York. A specialist in manuscript illumination in northern France and the southern Netherlands in the fifteenth century, he has published numerous articles and is the author of Made in Flanders: The Master of the Ghent Privileges and Manuscript Illumination in the Southern Netherlands in the Time of Philip the Good (2000), and The Spitz Master: A Parisian Book of Hours (2003). He has also published commentaries on The Hours of Isabel la Cat?lica (1999) and on the Da Costa Hours (2010).