Mithridates was installed by
Roman emperor Tiberius, who invaded Armenia in AD 35. When the
Parthian prince
Orodes, son of
Artabanus II of Parthia, attempted to dispossess Mithridates of his newly acquired kingdom, Mithridates led a large Armenian and Iberian army and defeated the Parthians in a pitched battle. Around AD 37, the new emperor
Caligula had Mithridates arrested, but
Claudius restored him to the Armenian throne in AD 42. Subsequently, Mithridates' relations with his brother
Pharasmanes I deteriorated to the point where the Iberian king instructed his son,
Rhadamistus, to
invade Armenia. Betrayed by his Roman commanders, Mithridates surrendered in the
Siege of Garni. Roman historian
Cassius Dio reports a likely apocryphal confrontation of Mithridates and Claudius in
Rome. In 51 AD, Mithridates was murdered by Rhadamistus, who usurped the crown and married his cousin
Zenobia, Mithridates' daughter. ==References==