Vologases III of Parthia

Vologases III (Parthian: Walagash, , Balash, ) was a Parthian Prince who claimed the throne of the Parthian Empire about 105, in the last days of Pacorus II of Parthia (80–105) and reigned over the eastern portion of the kingdom from 105 to 147. Vologases III was the son of Vologases II of Parthia. During his Parthian rule was also the Roman Client King of Armenia from 117/8 until 144 and from his Armenian Kingship is known as Vologases I or Vagharsh I. The period was one of civil war in the Parthian kingdom; for the early part of his reign Vologases III contended with Pacorus II's legitimate successors Osroes I (105–116 and 117–129), Parthamaspates (116–117), and Mithridates IV (129–140), who ruled Mesopotamia. Preoccupied by conflicts with the Romans, particularly the invasion by Roman emperor Trajan (98–117), they were unable to effectively challenge Vologases III.