Gaius Julius Archelaus Antiochus Epiphanes, also known as Julius Archelaus Epiphanes; Epiphanes; Gaius Julius Antiochus Epiphanes or simply known as Gaius (Greek: ο Γάιος Ιούλιος Αρχέλαος Αντίοχος Επιφανής, 38-92 AD) was an influential prince of the Kingdom of Commagene, who lived in the 1st century.
Epiphanes was the first-born son and child to King Antiochus IV of Commagene and Queen Iotapa of Commagene. His parents were full-blooded siblings. His parents were Roman Client Monarchs of Commagene who lived under the Roman Empire in the 1st century. His younger siblings were prince Callinicus and princess Iotapa.
He was of Armenian, Greek and Median descent. Through his ancestor from Commagene, Queen Laodice VII Thea, who was the mother of King Antiochus I Theos of Commagene, he was a direct descendant of the Greek Syrian Kingdom, the Seleucid Empire. He was most probably born in Samosata, the capital of the Kingdom of Commagene, or in Rome. However, he was raised and educated between Rome and Samosata. His mother died around 52 and his father raised him. Epiphanes was named in honor of his father, his ancestors and the late Roman Client King Archelaus of Cilicia.
Antiochus IV was an ally to the Roman Emperors and various members of the Herodian Dynasty. Epiphanes was betrothed in 43/44 to the princess Drusilla, who was a daughter of Judean King Agrippa I. Agrippa thought that Epiphanes would embrace Judaism and Jewish customs. However, Epiphanes never married Drusilla because he refused to adopt the customs and religion of the Jews. The marriage between Epiphanes and Drusilla had not been contracted on the death of Agrippa I.