The Master of Guillebert de Mets was a prolific, anonymous, illuminator who worked in Flanders during a flourishing period of manuscript production. The Master's name derives from his illuminations in a manuscript of the *Decameron,* now in Paris, which was signed by the scribe Guillebert de Mets. The Master of Guillebert de Mets was trained in Paris or by Parisian illuminators who worked in Fland