Constantine Vii Porphyrog...

Constantine Vii Porphyrogenitus is the author of "Constantini Porphyrogeniti Imperatoris de Cerimoniis Aulae Byzantinae Libri Duo, Vol. 1", "De Thematibus et de Administrando Imperio", "Constantini Porphyrogeniti Imperatoris de Cerimoniis Aulae Byzantinae Libri Duo;...