Circesium was an ancient city, a bishopric in Osrhoene, was founded at the confluence of the Khabur River under the Roman Emperor Diocletian, replaced a still older city, Sirhi passed temporarily by the treaty into the hands of the Persia ns. The city was restored by Justinian I. Benjamin of Tudela. A Nestorian writer says at the First Council of Nicaea. Abrahamius took part in 451 in the Council of Chalcedon. Nonnus was acted also at a conference as a representative of the Monophysites.
Anazarbus was converted later to the city's South Gate