Ten years ago now, in an early book to advance the recognition that papal relations to the Christian East are much more complicated than apologists and polemicists on either side have recognized, Andrew Ekonomou, in Byzantine Rome and the Greek Popes: Eastern Influences on Rome and the Papacy from Gregory the Great to Zacharias, A.D. 590-752 drew our attention to prominent Byzantine figures working closely with popes of Rome to combat, e.g., monotheletism.