58 Corbulo drives out Tiridates I and puts Tigranes V (VI) Herodes the Cappadocian on the throne.
61 Vologases crowns Tiridates king of Armenia and proceeds against Tigranes.
66 Tiridates goes to Rome to receive the crown as a gift from Nero. Meanwhile, Erorant, of the younger Arsacid branch, has established himself, about 58, over a large portion of Armenia. He is the contemporary of Tiridates, and after the latter’s death, probably rules the whole country. He cedes Edessa and Mesopotamia to the Romans.
78 Exeardes, son of Pacorus II of Parthia, is appointed to the throne. He is several times driven out, but always manages to recover his throne.
112 Osroes, brother of Mithridates VI of Parthia, expels Exeardes and makes Parthamasiris, another son of Pacorus, king, for which act Trajan invades Armenia. Parthamasiris is humbled.
117 Trajan appoints Parthamaspates, son of Oroes, king. He is expelled, and recovers the kingdom from Hadrian. He is succeeded by his son, Achæmenides, and he in turn by Soemus or Sohæmus.
162 Vologases III of Parthia expels Sohæmus, who is friendly to Rome, and makes Pacorus king.
163 or 164 Sohæmus restored by the Romans, and is succeeded (date unknown) by his son, Sanatruces or Sanadrug, who is established on the throne by Septimius Severus.
212 Caracalla seizes Sanatruces.
Armenian historians speak of a Chosroes I, the Great, who rules about this time, but the Romans do not mention him. Sanatruces seems to have been followed by Vologases, his son, and he in turn by his son Tiridates II, who escapes from the Romans to Vologases V of Parthia, about 227. His successor is Arsaces II, brother of Artabanus IV of Parthia. He wars against Ardashir, the Sassanid.