Vologases III of Parthia
Overview
 
Vologases III of Parthia claimed the throne of the Parthian Empire
Parthia
Parthia is a region of north-eastern Iran, best known for having been the political and cultural base of the Arsacid dynasty, rulers of the Parthian Empire....

 about 105, in the last days of Pacorus II of Parthia
Pacorus II of Parthia
Pacorus II of Parthia ruled the Parthian Empire from about 78 to 105. A son of Vonones II and brother of Vologases I, he was given the kingdom of Media Atropatene by the latter after his succession to the throne. After Vologases' death, Pacorus revolted against his brother's son and successor,...

 (80–105). He reigned over the eastern portion of the kingdom from 105 to 147. The period was one of civil war
Civil war
A civil war is a war between organized groups within the same nation state or republic, or, less commonly, between two countries created from a formerly-united nation state....

 in the Parthian kingdom; for the early part of his reign Vologases III contended with Pacorus II's legitimate successors Osroes I
Osroes I of Parthia
Osroes I of Parthia ruled the Parthian Empire c. 109–129. He succeeded his brother Pacorus II. For the whole of his reign he contended with the rival king Vologases III based in the east of Parthia....

 (105–116 and 117–129), Parthamaspates
Parthamaspates of Parthia
Parthamaspates, Roman client king of Parthia and later of Osroene, was the son of the Parthian emperor Osroes I.After spending much of his life in Roman exile, he accompanied the Roman Emperor Trajan on the latter's campaign to conquer Parthia...

 (116–117), and Mithridates IV
Mithridates IV of Parthia
Mithridates IV of Parthia ruled the western Parthian Empire from 129 to 140. He was the brother of Osroes I of Parthia . He was the youngest son of the Parthian King Vonones II. During the invasion of Mesopotamia by the Roman emperor Trajan in 116 he and his son Sanatruces II took up the diadem...

 (129–140), who ruled Mesopotamia
Mesopotamia
Mesopotamia is a toponym for the area of the Tigris–Euphrates river system, largely corresponding to modern-day Iraq, northeastern Syria, southeastern Turkey and southwestern Iran.Widely considered to be the cradle of civilization, Bronze Age Mesopotamia included Sumer and the...

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