Athenais Philostorgos I, her surname can be spelt as Philostorgus was a Queen 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...

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Athenais was a Greek

Greeks

The Greeks, also known as the Hellenes , are a nation and ethnic group native to Greece, Cyprus and neighboring regions. They also form a significant diaspora, with Greek communities established around the world....

 noblewoman of obscure origins. She was the wife of the Cappadocian Persian nobleman

Persian people

The Persian people are part of the Iranian peoples who speak the modern Persian language and closely akin Iranian dialects and languages. The origin of the ethnic Iranian/Persian peoples are traced to the Ancient Iranian peoples, who were part of the ancient Indo-Iranians and themselves part of...

 and King Ariobarzanes I Philoromaios  and her through marriage became a Queen 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...

. Ariobarzanes I reigned as King of Cappadocia from 95 to 63/62 BC.

It appears when Ariobarzanes I reigned as King he married Athenais as his Queen. Little is known on how she reigned as Queen and her relationship with her family. Athenais bore Ariobarzanes I two children: a son Ariobarzanes II Philopator  who later succeeded his father as King and a daughter, Isias

Isias

Isias, surnamed Philostorgos or Philostorgus was a Princess of Cappadocia who lived in the 1st century BC. Through her marriage to King Antiochus I Theos of Commagene, she became the Queen of Commagene. Very little is known on her. She was half Persian and half Greek...

 Philostorgos who later married the King Antiochus I Theos of Commagene

Antiochus I Theos of Commagene

Antiochus I Theos Dikaios Epiphanes Philorhomaios Philhellenos Antiochus I Theos Dikaios Epiphanes Philorhomaios Philhellenos Antiochus I Theos Dikaios Epiphanes Philorhomaios Philhellenos (Greek: о Αντίοχος Θεός Δίκαιος Επιφανής Φιλορωμαίος Φιλέλλην, meaning Antiochos, a just, eminent god, friend...

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Athenais is also known through a surviving honorific inscription dedicated to her son in Athens

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...

, Greece

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

dating from the mid 1st century BC.

King Ariobarzanes Philopator, son of King
Ariobarzanes Philoromaios and of Queen
Athenais Philostorgos, (is honored by) those who had been commissioned
by him for the construction of the Odeion,
Gaius and Marcus Stallius, sons of Gaius, and
Menalippos, as their benefactor.

Sources

• http://ancientlibrary.com/smith-bio/0412.html
• Sherk, R.K. Rome and the Greek East to the death of Augustus, Cambridge University Press, 1984