Arsames I (Greek: Ἀρσάμης; Old Persian: 𐎠𐎼𐏁𐎠𐎶) seems to have taken control of Commagene, Sophene and Armenia in the year 260 BC after the death of his grandfather Orontes III, king of Armenia, and his father Sames, king of Commagene.
|King of Armenia, Sophene & Commagene|
|Reign||260 – 228 BC|
|Successor||Possibly Arsames II|
Xerxes, King of Sophene & Commagene
"Arsames" is the Hellenized form of the Old Persian name Aršāma[a] ("having a hero’s strength"), which was a common name within the Persian Achaemenid family as well as amongst the Persian elite of the Achaemenid Empire (550–330 BC). The name is a compound, composed of aršan ("male, hero") and ama ("strength").[b] The name is attested in Aramaic as ʾršm. The feminine form of the name, *Aršāmā (Greek Arsamē), is attested in the daughter of Darius the Great (522–486 BC).
Arsames also supported Antiochus Hierax against his brother, Seleucus II Callinicus, who was defeated at a battle against king Mithridates II of Pontus near Ankara in 239 BC, after which Seleucus lost control of any lands he had across the Taurus mountains. This was to the benefit of Arsames.
After his death his eldest son Xerxes became king of Commagene, Sophene and Armenia. Orontes IV would succeed Xerxes whilst another son known as "Mithras" (or Mithrenes II) is recorded as being the High Priest of the temple to the Sun and Moon at Armavir.