Commentary on the "De Administrando Imperio"The De Administrando Imperio, compiled by Constantine VII Porphyrogenitus in the tenth century, is one of the most important historical documents surviving from the middle Byzantine period, containing a wide variety of information on foreign relations and internal administration. The critical text of the De Administrando Imperio, edited by Gyula Moravcsik and translated by R. J. H. Jenkins (Dumbarton Oaks Texts), is now joined by the commentary,