The second part, originally composed in Syriac, was an addition of the Syrian translator. Among the persons named in this part, it is noticeable that there are no Arians, nor even Nestorians, who, when expelled from the Roman Empire by Theodosius II. in 435, made themselves masters of the Persian Church. Of the sixteen bishops mentioned in the first section, at least eight are known to have been orthodox Persian martyrs, all belonging to the period before 400, _e.g._ Simon Bar-Sabai, Bishop of Seleucia-Ctesiphon († 17th April 344), his successor, Schahdust († 346), and Sapor, Bishop of Beth Gormai.[755] Miles (Milles), Simeon, Barbasimas, Joannes, Sapores, Gudiab, Sabinus, Abdos, Paul, and Ebedjesus are mentioned by Sozomen as Persian martyrs of the reign of Sapor I.[756] This very primitive calendar contains only the names of martyrs to the exclusion of other persons who were even regarded as saints, such as Mares, the second bishop of Seleucia († 82).[757] The compiler calls those whom he included in his calendar the Holy Martyrs who had been put to death in the East, while he regards those named in the first part as the Holy Confessors of the West, regarding the Roman Empire as the West in respect to Persia. The first part, which concerns the West, differs from the second in many respects. It was drawn up by another hand, and was written originally in Greek. The latter is a document entirely historical in character, while the former is liturgical; the one belongs to Persia, the other to the Roman Empire, and probably to Nicomedia. It was then employed in Antioch, where it was enlarged, and finally, as it appears, was translated into Syriac at Edessa. It forms one of the most remarkable documents of ancient Christian literature. That this Arian martyrology belonged to the Roman Empire, and especially to its eastern part, is proved by the calendar employed therein, _i.e._ the Julian, with the addition of the Chaldean names for the months, the days of the month being given simply without reference to calends and nones and ides. The author is well-informed with regard to the eastern half of the Roman Empire; he knows names and date of death of eight bishops of Antioch, the name Antioch occurs in all twenty-four times, Nicomedia is named thirty-two times, but the name of no bishop of Nicomedia is given, Alexandria is mentioned nineteen times, Constantinople, Rome, and Jerusalem only twice. The date of this work is fixed by the mention of the celebrated Bishop James of Nisibis on the 15th July. He was alive after 350, when the Persians besieged Nisibis, and flourished, according to the somewhat vague expression of the Chronicle of Samuel of Ani, in the 283rd Olympiad, _i.e._ 353-356.[758] Thus the martyrology was written in the period between 370 and 400, and sometime about 380, when Arianism was the dominant religion in the eastern half of the empire.