Mithridates son of Ariobarzanes

Ariobarzanes I of Cius

Ariobarzanes , Ariobarzan or spelled as Ario Barzan or Aryo Barzan, perhaps signifying "exalting the Aryans" , was Satrap of Phrygia, leader of independence revolt, and the first known of the line of rulers of the Greek town of Cius from which were eventually to stem the...

 prince of Cius

Cius

Cius or Kios , later renamed Prusias ad Mare after king Prusias I of Bithynia, was an ancient Greek city bordering the Propontis , in Bithynia , and had a long history, being mentioned by Aristotle, and Strabo. It was colonized by the Milesians and became a place of much commercial importance...

, is mentioned by Xenophon

Xenophon

Xenophon , son of Gryllus, of the deme Erchia of Athens, also known as Xenophon of Athens, was a Greek historian, soldier, mercenary, philosopher and a contemporary and admirer of Socrates...

as having betrayed his father, and the same circumstance is alluded to by Aristotle

Aristotle

Aristotle was a Greek philosopher and polymath, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, linguistics, politics, government, ethics, biology, and zoology...

.
Presumably he was not the same Mithradates

Mithridates (soldier)

Mithridates was a young Persian soldier in the army of king Artaxerxes II who according to a version in Plutarch's Life of Artaxerxes II, accidentally killed the rebel claimant to the throne Cyrus the Younger in the Battle of Cunaxa .-Account of events:Shortly after, Cyrus's death was reported to...

 who accompanied the younger Cyrus

Cyrus the Younger

Cyrus the Younger, son of Darius II of Persia and Parysatis, was a Persian prince and general. The time of his birth is unknown, but he died in 401 B.C. The history of Cyrus and of the retreat of the Greeks is told by Xenophon in his Anabasis. Another account, probably from Sophaenetus of...

 - there is no proof of this. Neither he presumably was the same Mithradates

Mithradates, Satrap of Cappadocia

Satrap Mithradates was mentioned by Xenophon as satrap of Cappadocia and Lycaonia in the late 400s BCE. He possibly was the Mithradates who accompanied the younger Cyrus. However he was not necessarily the Mithradates who caused Cyrus' death and was killed himself in its aftermath.Pharnabazos,...

 mentioned by Xenophon as satrap

Satrap

Satrap was the name given to the governors of the provinces of the ancient Median and Achaemenid Empires and in several of their successors, such as the Sassanid Empire and the Hellenistic empires....

 of Cappadocia

Cappadocia

Cappadocia is a historical region in Central Anatolia, largely in Nevşehir Province.In the time of Herodotus, the Cappadocians were reported as occupying the whole region from Mount Taurus to the vicinity of the Euxine...

 and Lycaonia

Lycaonia

In ancient geography, Lycaonia was a large region in the interior of Asia Minor, north of Mount Taurus. It was bounded on the east by Cappadocia, on the north by Galatia, on the west by Phrygia and Pisidia, while to the south it extended to the chain of Mount Taurus, where it bordered on the...

 in the late 400s BCE.

During the Satraps' Revolt in the 1360s, Mithridates frauded Datames

Datames

Datames was a general and satrap of Cappadocia under the Persian empire. A Carian by birth, he was the son of Camissares by a Scythian or Paphlagonian mother...

 to believe in him, but in the end arranged Datames' murder in 362 BCE. Similarly, Mithridates gave his own father Ariobarzanes of Phrygia to the hands of the Persian overlord, so Ariobarzanes was crucified in 362 BCE.

Demosthenes

Demosthenes

Demosthenes was a prominent Greek statesman and orator of ancient Athens. His orations constitute a significant expression of contemporary Athenian intellectual prowess and provide an insight into the politics and culture of ancient Greece during the 4th century BC. Demosthenes learned rhetoric by...

 speaks of Ariobarzanes and his three sons having been lately made Athenian

Athens

Athens , is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, as its recorded history spans around 3,400 years. Classical Athens was a powerful city-state...

 citizens. - as signal of sympathy in the revolt effort, Athens made Ariobarzanes and three of his sons as citizens of Athens. Mithradates was possibly one of those sons.

In 363 BCE already, Ariobarzanes II

Ariobarzanes II of Cius

Ariobarzanes succeeded his kinsman or father, Mithridates or alternatively succeeded another Ariobarzanes I of Cius, as ruler of the Greek town of Cius in Mysia, governing 26 years between 363 and 337 BC for the Persians. It was seemingly his family which in mid-360s BCE revolted from Artaxerxes...

 (possibly Mithridates' son) made himself master of the family fiefdom of Cius in Mysia

Mysia

Mysia was a region in the northwest of ancient Asia Minor or Anatolia . It was located on the south coast of the Sea of Marmara. It was bounded by Bithynia on the east, Phrygia on the southeast, Lydia on the south, Aeolis on the southwest, Troad on the west and by the Propontis on the north...

.
No classical source actually says that this Mithradates would have died in 363 BCE. Such a death date comes merely from much later reconstructions of the succession in the dynasty, which may have gotten this man wrong.

However, if they are not separate persons, this Mithradates may well be the same man as the elderly Mithridates II of Cius

Mithridates II of Cius

Mithridates of Cius succeeded his kinsman or father Ariobarzanes II in 337 BC as ruler of the Greek town of Cius in Mysia . Diodorus assigns him a rule of thirty-five years, but it appears that he did not hold uninterrupted possession of the sovereignty during that period...

who held Cius in Mysia between 337 and 302 BCE, being said to be an old man at that time.