Mithridates I (or Mithradates), "Great King" of Parthia from about 171 BC who will turn Parthia into a major political power and expand the empire westward into Mesopotamia (d. 138 BC)
After having gained full control over the recently conquered regions, Mithridates established royal residences at Seleucia, Ecbatana, Ctesiphon and his newly founded city, Mithradatkert (Nisa, Turkmenistan), where the tombs of the Arsacid kings were built and maintained.
Parthia | Arsaces I of Parthia | Vologases III of Parthia | Mithridates VI of Pontus | Vologases IV of Parthia | Mithridates I of Parthia | Mithridates I Callinicus | Mithridates | Tiridates I of Parthia | Pacorus II of Parthia | Mithridates III of Commagene | Vonones II of Parthia | Vologases V of Parthia | Vologases I of Parthia | Parthia (horse) | Orodes II of Parthia | Mithridates II of Commagene | Laodice (wife of Mithridates II of Pontus) | Laodice (wife of Mithridates III of Pontus) | Artabanus V of Parthia | Artabanus IV of Parthia |
According to this inscription, the statue was carved in 139 BC on the occasion of a conquest for Seleucid Greeks (under Demetrius II Nicator) against the Parthians (under Mithridates I of Parthia), though the Seleucids were later defeated and driven from the region.