Ariobarzanes: king of Pontus (r.266-c.250 BCE).
Ariobarzanes was the second king of Pontus, but he is little more than a name. He was a son of Mithridates, the founder of the kingdom, and continued his father's policy of collaboration with the Greek towns of the Black Sea. This can be deduced from a fragment by the historian Memnon:
Eumenes, who held Amastris, was swayed by an unreasonable anger, and preferred to hand over the city for free to Ariobarzanes the son of Mithridates, rather than to accept payment for it from the Heracleians.note[Memnon, FGrH 434, Fragment 9.4.]
Ariobarzanes, who ruled from 266 until about 250 BCE, was succeeded by his son Mithridates II.