Severianus is best known as the governor of
Cappadocia in the late 150s. The position was important, for Cappadocia was a border province, which is why Severianus, with his military background and experience of frontier provinces, was assigned. Historian
Marcel Le Glay suggests that his promotion was due to the support of
Publius Mummius Sisenna Rutilianus, the governor of
Asia who is famous as a follower of the self-described prophet
Alexander of Abonoteichus thanks to the works of
Lucian. In Cappadocia, Servianus' actions seem to have been popular: on an inscription from
Zela he is honored as the benefactor (
Greek:
evergetes) and founder (Greek:
ktistes) of the city. He also appears on an inscription in
Sebastopolis. As governor of Cappadocia Servianus was allocated two legions.
War with Parthia In the summer of 161, the Parthian
Vologases IV invaded Armenia, expelled the ruler
Sohaemus placed there by the Romans, and installed his own relative
Pacoras as king. Being governor of Cappadocia meant Severianus would be on the front line of any conflict involving
Armenia, Alexander of Abonoteichus had enraptured Severianus, as he had the proconsul Rutilianus. Alexander convinced Severianus that he could defeat the Parthians easily, and win glory for himself. Severianus led a
legion (perhaps the
IX Hispana) into Armenia, but was trapped by the Parthian general Chosrhoes at Elegeia, a town just beyond the Cappadocian frontiers, near the headwaters of the
Euphrates. Severianus made some attempt to fight Chosrhoes, but soon realized the futility of his campaign, and committed suicide. His legion was massacred. The campaign had only lasted three days. He was replaced as governor of Cappadocia by
Marcus Statius Priscus. Some historians believe that the defeat of Severianus at Elegeia explains the disappearance of the legions
XXII Deiotariana and
IX Hispana, but no proof exists that could confirm this hypothesis; the fate of the two legions is still controversial. ==Aftermath==