"Romanised" Parthian kings (2 BC - AD 12)
In 2 BC, the young Phraataces, with the help of his Italian mother, poisoned his father Farhad IV, and proclaimed himself king Farhad V. Armenia once more claimed attention - Farhad V helped eject the pro-Roman ruler. The Romans intervened quickly - Augustus sent his grandson Gaius Caesar to do a deal - one favourable to Rome unsurprisingly. But the "Armenian question" was not settled yet.
Four years after becoming king, in AD 4, Farhad V and his mother were married. Coins show the happy couple:
Farhad V with his mother Mousa, "queen of heaven".
The Parthian nobles were not happy, however - and Farhad V was dethroned. After the brief reign of Orod III (AD 2 - 7), one of Farhad V's younger brothers - the ones educated in Rome - became king Varan I (Vonones). The "Roman" Varan's lack of interest in Parthian culture (not even in horses.) led to a reaction:
No more Romans! Enter Ardavan III (AD 10/11 - 38):
Ardavan III (Artabanus) was an old-style Parthian, who'd lived for a while among his nomad ancestors the Dahae. Time to return to traditional Parthian horse-riding, hunting and feasting! After ejecting Varan I he brought some order to the Parthian empire - suppressing an independent Jewish state that for 15 years successfully carved out a territory for itself in Babylonia. Rather ironically, a few years later, Ardavan III found himself a temporary refugee in Adiabene, whose king and ruling family had recently become Jews.
The Roman historian Tacitus notes Ardavan's lack of respect for the Romans:
Showing his contempt for the senile and ineffective [Roman emperor] Tiberius... he boasted that he intended to invade the former territories of the Persians and the Macedonians, once held by Cyrus and by Alexander.
After Ardavan, there was a struggle between two of his sons. It was eventually solved by Godarz II (Gotarzes) who, with Dahae support, murdered his brother Vardan I (Vardanes). He also saw off Mehrdad (Mithridates), a grandson on Farhad IV who'd been brought up in Rome. Godarz cut off his ears, and commemorated his victory with another new inscription at Bisitun. Mehrdad had been supported by some of the Parthian nobles, who were disgusted by Godarz's cruelty, and had asked the Romans to intervene.
The Parthian reliefs at Bisitun.
They were partly obliterated by an Islamic plaque in the 17th century.
The Iranian revival
During the 1st century AD, Greek influence in Parthia began to decline - not without protest from the largest Greek city, Seleuceia, which even managed to become independent for a short while during the reign of Ardavan III. Kings no longer automatically called themselves "Philhellene" (Greek lover) on coins, and Pahlavi, the Iranian language spoken by the Parthians was now written using the Aramaic script, not the the Greek alphabet.
Under Valaksh I (Vologases) who became king in AD 51 and ruled until AD 80, a determined effort was made to revive Iranian culture and especially the Zoroastrian religion: Zoroastrian fire-altar motifs start appearing on coins, and Zoroastrian texts were collected together to form the core of the Avesta. The Silk Route through Parthia from China was flourishing. Valaksh I tried to lessen the importance of Seleuceia by expanding nearby Babylon, and founding a new city on the Tigris. Alexandria in Margiana (later Antioch in Margiana), a key city on the Silk Route now in Turkestan became Merv, and Susa's Greek spelling reverted to Shush.
The Armenian question (still with us.): the Romans return
Valaksh I, after the usual struggle, established himself as king with the help of his brother Tirdad (Tiridates). Armenia was in chaos: there'd been an unauthorised Roman invasion which had recognised a usurper, Rhadamistus, as king. A second invasion to deal with the damage caused by the first one was called off, in case it provoked the Parthians. And of course it did just that. Valaksh I saw a chance to win back Armenia for Parthia. In 52 BC he invaded, took Artaxata the capital, and made his brother king - as a thank you for his help.
Problem: a condition of the peace made between Augustus and Farhad IV in 20 BC was that Armenia was in the Roman sector - and only Rome could choose the Armenian king. Valaksh I and his army had to return to Parthia to deal with problems there - and Rhadamistus came back to Armenia. But the Armenians preferred Tirdad, and made him king again. None of this pleased the Romans.
Nero fiddles with Armenia
The Roman emperor was Augustus' great grandson, Nero. Scandalous as many of his antics in Rome seem to have been, in foreign policy his ideas were, from the Roman point of view, sound - and very traditional. From the time of Pompey's settlement in 63 BC, the Romans had tried to keep a swathe of "buffer states" (ruled by local kings owing their power entirely to Rome) between Roman provinces, such as Syria, and Parthia. Armenia was considered one of these states - it was seen as vital to keep Armenia Roman, to maintain a barrier between the two empires.
Mount Ararat from the site of Artaxata, Armenia
Nero sent his best general, Corbulo, with a large and specially trained army to sort things out. In AD 58, Corbulo invaded Armenia. Tirdad fled from Artaxata, which Corbulo captured and burned. Corbulo next moved to Tigranocerta, the lowland capital which meekly surrendered to the Romans. A new king was nominated by Rome - Tigranes. Having seen off Tirdad's counter-attack, Corbulo marched back to Syria in triumph, and, as a reward, was made governor of Syria. Various of the client kings who'd helped the Romans were also rewarded.
Where was Valaksh? He'd had troubles in Parthia to settle - but was enraged to see a Roman puppet as king of Armenia. Now he was firmly in control at home, he invaded Armenia, and quickly undid all Corbulo's gains. Back to square one.
The Romans responded, as they had to. Fighting resumed - but the Romans found the well-trained Parthian cavalry much harder to deal with than the Armenians had. By AD 63, Corbulo was forced to compromise. Valaksh's brother Tirdad would stay as king, but would receive his crown from Nero in person, proving his loyalty to Rome. In future Armenian kings would come from the Parthian royal family, but be approved by Rome.
Tirdad's visit to Rome in AD 66 is recorded as a most magnificent occasion, with no expense spared: Nero came to meet him at Naples (he was travelling with his entire family and retinue of 3,000 horsemen). Games were laid on, where Tirdad showed off his skill as an archer. There was a special gladiatorial display. There was a splendid torchlight procession through Rome ... and so on, leading up to the climax, when Nero placed the crown on Tirdad's head. Rome had never seen anything like it.
Thus Nero, like his great grandfather Augustus before him, managed to turn a virtual defeat into a propaganda victory. Money was sent to rebuild Artaxata, which was renamed Neronia. Peace lasted throughout the following reign of Vespasian - leaving him to concentrate on the other major eastern troublespot - Judaea. The Armenian question was off the agenda - for the next 50 years at least. Armenia was firmly established as a Parthian client - and was ruled by a member of the Parthian Arsacid family - normally the next of kin to the Great King of Parthia.