Antiochus did not regain his kingdom till the accession of Roman Emperor Claudius in 41. In 43 his first son, C. Julius Archelaus Antiochus Epiphanes, was betrothed to Drusilla, a daughter of Agrippa I. Apart from Epiphanes, Antiochus had another two children with Iotapa: Callinicus and a younger Iotapa. In 53, Antiochus put down an insurrection of some barbarous tribes in Cilicia, called Clitae. In 55 he received orders from the Roman emperor Nero to levy troops to make war against the Parthians, and in the year 59 he served under General Cn. Domitius Corbulo against King Tiridates I of Armenia, brother of the Parthian King Vologases I of Parthia. In consequence of his services in this war, in the year 61 he obtained parts of Armenia.