Michael Glycas a noted ecclesiastical historian of the Greek Church of the 12th century (some place him as late as the 15th), was a native of Sicily, and flourished about A.D. 1120. His most important production, the Annales Quadripartiti, is a work not only historical, but also philosophical and theological. Part I describes the creation of the world in six days; Part II extends from the creation to the birth of Christ; Part III to Constantine the Great; and Part IV to the death of Alexius Comnenus, A.D. 1118. It was published in Gr. and Lat., with notes, by Labbe (Paris, 1660, fol.). Glycas also wrote Disputationculae II, and likewise many epistles, of which fragments are preserved.