Dara taken in the Persian wars, [136]
Dastagerd taken by Heraclius, [138]
David Comnenus defeated by Theodore I., [299]
Delphic tripod, the, [24];
mutilated by Mahomet II., [349]
Delphic oracle, the, orders foundation of Byzantium, [3]
Digenes Akritas, epic of, [222]
Diocletian makes Nicomedia his capital, [15]
Diogenes, Romanus, reign of, [251];