Phraates V, or as he is usually called Phraataces (diminutive), was thus the third Arsacid in successive generations to reach the throne by parricide. Phraates V, whose first coin is of 2 B.C., tried an energetic policy, expelling Artavasdes III, and the Roman troops that supported him from Armenia, and seating on the throne Tigranes IV, who had been a fugitive under Parthian protection. As Augustus did not wish to extend the empire, and Phraates was not very secure on his throne, neither party cared to fight, and an agreement was patched up after some angry words, Phraates resigning all claim on Armenia and leaving his brothers as hostages in Rome (1 A.D.). Phraates now married his mother, a match probably meant to conciliate the clergy, as he knew that the nobles hated him. In fact he was soon driven by a rebellion (after October, 4 A.D.) to flee to Roman soil, where he died, it seems, not long afterwards.
The Parthians called Orodes II from exile to the throne. Of him we have a coin of autumn, 6 A.D.; but his wild and cruel temper soon made him hated, and he was murdered while out hunting. Anarchy and bloodshed now gaining the upper hand, the Parthians sent to Rome (before 9 A.D.), and received thence as king Vonones, the eldest of the sons of Phraates IV, a well-meaning prince, whose foreign education put him quite out of sympathy with his country. A strong reaction of national feeling took place, and the main line of the Arsacids being now exhausted by death or exile, Artabanus, an Arsacid on the mother’s side, who had grown up among the Dahæ and had afterwards been made king of Media (Atropatene), was set up as pretendant in 10 or 11 A.D. Artabanus was defeated at first, but ultimately gained a great and bloody victory and seated himself in Ctesiphon. Vonones fled to Armenia and was chosen as king of that country (16 A.D.); but Tiberius, who was anxious to avoid war, and did not wish to give Artabanus III any pretext to invade Armenia, persuaded Vonones to retire to Syria. Later he was interned in Cilicia, and in 19 A.D. lost his life in an attempt to escape.
Amidst such constant rebellions Artabanus III, shrewd and energetic, not merely held his own but waged successful foreign wars, set his son Arsaces on the throne of Armenia, and challenged Rome still more directly by raising claims to lordship over the Iranian population of Cappadocia. Through the whole first century of the Roman Empire all relations to Parthia turned on the struggle for influence in Armenia, and, much as he loved peace, Tiberius could not suffer this disturbance of the balance of power to pass unnoticed. Much as Artabanus hated the Romans, his insecure position at home drove him in 37 A.D. to make an accommodation on terms favourable to them and send his son Darius as hostage to Tiberius.
[40-81 A.D.]
In Artabanus’ life-time the second place in the empire had been held by one Gotarzes, who appears to have been his colleague in the upper satrapies, and perhaps his lieutenant in his flight to Adiabene. But there is monumental evidence that he was not, as Josephus says and Tacitus implies, Artabanus’ son (except by adoption), and so we find that the succession first fell to Vardanes, who coined money in September, 40 A.D. But in 41 A.D., Gotarzes gave Vardanes an opportunity to return; in two days he rode 345 miles, and taking his rival by surprise he forced him to flee, and occupied the lower satrapies, where he coined regularly from July, 42 A.D., onwards. The renewal of civil war enabled the emperor Claudius, with the aid of the Iberians, to drive the Parthian satrap Demonax from Armenia and reseat Mithridates on the throne. Meantime Gotarzes and Vardanes were face to face in the plain of western or Parthian Bactria, but an attempt on the life of the latter having been disclosed by his foe they made peace, and Gotarzes withdrew to Hyrcania; while Vardanes, confirmed in his empire, returned to Seleucia and took it in 43 A.D. after a siege of seven years.
That Vardanes was a great king is plain from the high praise of Tacitus and the attention which the greatest of Roman historians bestows on a reign which had no direct relations to Rome. Vardanes, whose last coin is of August, 45 A.D., was murdered while hunting—a victim, we are told, to the hatred produced by his severity to his subjects. But in judging of the charges brought against him and his two predecessors, we must remember that the rise of a new dynasty like that of Artabanus is always accompanied by deeds of violence, and that the oppressed subjects are simply the utterly unruly Parthian nobles who had lost all discipline in the long civil wars, and could only be controlled by force.
Gotarzes died of a sickness, not before June, 51 A.D., and was followed by Vonones II, who had been king in Atropatene, and was probably a brother of Artabanus III. According to the coins his short reign began before September, 51 A.D., and did not end before October, 54 A.D. He was succeeded by his eldest son, Volagases I, the brothers acquiescing in his advancement, although his mother was only a concubine from Miletus; and receiving their compensation by being nominated to kingdoms which gave them the second and third places after the king of kings—Pacorus to Media or Atropatene, and Tiridates to Armenia. The Armenians now offered no resistance to the Parthians, but the Romans were not content to lose their influence in the land. Open war with Rome, however, was still delayed by negotiations. Finally Rome refused to confirm a treaty, and war was declared. The first year of the war (62 A.D.) was unfortunate for the Romans. Next year the war was resumed, and Corbulo, crossing the Euphrates at Melitene, had penetrated into Sophene when the Parthians earnestly sought peace. It was agreed that Tiridates should lay down his diadem and go to Rome in person to receive it again from the emperor, which was done accordingly in 66 A.D. The real advantage of the war lay more with Parthia than with Rome; for if the Roman suzerainty over Armenia was admitted, the Parthians had succeeded, after a contest which had lasted a generation, in placing an Arsacid on the Armenian throne. After Nero’s death Volagases (Vologeses) formed very friendly relations with Vespasian, which endured till 75 A.D.
Volagases I died soon after the Alan wars, leaving a just reputation by his friendly relation to his brothers (a relation so long unknown), his patient steadfastness in foreign war and home troubles, and his foundation of a new capital. Perhaps also he has the merit of collecting from fragments or oral tradition all that remained of the Avesta. From June, 78 A.D., we find two kings coining and reigning together, Volagases II and Pacorus II, probably brothers. From 79 A.D. there is a long break in the coins of the former, and Artabanus IV takes his place with a coin struck in July, 81 A.D. This Artabanus appears as the protector of a certain Terentius Maximus, who pretended to be Nero; he threatened to restore him and displace Titus by force, and though the pretender was at length given up, the farce, which was kept up till 88 A.D., might have ended in earnest but for the disorders of the times—indicated by a break in the Parthian coinage between 84 and 93 A.D., in which latter year Pacorus appears as sole king.
[88-116 A.D.]
At this time the political horizon of Parthia was very wide, and its intercourse with the farthest East was livelier than at any other date. In 90 A.D. the Yue-chi had come to war with the governor of Chinese Tatary and been reduced to vassalship: in 94 A.D. a Chinese expedition slew their king, and advancing to the “North Sea” (Lake Aral) subdued fifty kingdoms. The Tochari, one sees, like the Greeks before them, had neglected the lands north of the Hindu-Kush in their designs on India; even of Ooemo-Kadphises no coins are found north of that range. In 97 A.D. Chinese envoys directed to Rome actually reached the Mediterranean, but were dissuaded from going further from Parthian accounts of the terrors of the sea voyage; and in 101 A.D. Muon-kiu, king of An-si (Parthians), sent lions and gazelles to the emperor of China. Muon-kiu reigned in Ho-to—i.e., Carta or Zadracarta in Hyrcania; he was therefore a king of the Hyrcanians, who also held the old Parthian lands east of the Caspian Gate, and may be identical with a king, rival to Pacorus, who struck copper coins in 107 and 108 A.D., if the latter is not identical with the later monarch Osroes.