6; in the Khabur district), Bit Adini (Osroene), Kummukh (north-west corner and beyond); in the Roman period, Osroene, Mygdonia (in the east), and in Syriac usage Beth `Arbaye (between Nisibis and Mosul); in the Arab period, Diarbekr (T ar `Abdin), Diar Rebi'a (Mygdonia), Diar Muelar (Osroene).
The same is doubtless true of the route from Osroene by Ras al-`Ain and Nasibin, and that by Veranshehr and Mardin to the Tigris.
These are all in the Osroene district; but Nasibin became an Antioch, and as its district was known as Mygdonia (from Macedon) there were doubtless many other Greek settlements.
Then, when Vologaeses, yielding to his growing discontent, took advantage of the death of Antoninus to invade Armenia the Romans were victorious (164), and after the storming of places such as Nicephorium, Edessa, Nisibis, western Mesopotamia was once more Roman as far as the Khabur, Carrhae becoming a free city and Osroene a dependency.
Unfortunately they contain practically nothing that is not of Christian origin.4 On the death of Aurelius Hatra aided Niger against Septimius Severus in 194; Osroene rose against Rome, and Nisibis was besieged and other Roman places taken; but Septimius Severus appeared in person (195), and from Nisibis as headquarters subdued the whole country, of which he made Nisibis metropolis, raising it to the rank of a colony, the Sinjar district, where Arabs from Yemen had settled, being incorporated.