Dikran II (The Great) (95-55 BC)
When Dikran I died, his son, Dikran II, who had been taken hostage by the Parthians, managed to negotiate his release in return for the ceding to Parthia of seventy valleys. With Rome and Parthia both involved in internal conflict, Dikran II forged an alliance with Mithridates, King of Pontus, and married his daughter. While Mithridates dealt with the Romans in the west, Dikran II, having consolidated his power, turned eastward, recaptured the seventy valleys, and united all the Armenian lands. He then conquered Mesopotmia, Syria, Phoenicia, and Cilicia, giving Armenia its greatest expanse of territory. To govern this empire, he built a new capital called Dikranagerd.