Mithridates (in Greek Mιθριδάτης; lived 4th century BCE), son of Ariobarzanes prince of Cius, is mentioned by Xenophon[1] as having betrayed his father, and the same circumstance is alluded to by Aristotle.
[2] He may or may not be the same Mithradates who accompanied the younger Cyrus, or the same Mithradates mentioned by Xenophon[3] as satrap of Cappadocia and Lycaonia in the late 5th century BCE.
Demosthenes speaks of Ariobarzanes and his three sons having been lately made Athenian citizens.
In 363 BCE already, Ariobarzanes II (possibly Mithridates' son) made himself master of the family fiefdom of Cius in Mysia.
[5] This Mithradates may therefore have died in 363 BCE, but the date is not recorded and only comes from later reconstructions of the succession in the dynasty.