Lysias (Syrian chancellor) in the context of "Coele-Syria"

Demetrius I Soter (Ancient Greek: Δημήτριος Α` ὁ Σωτήρ, Dēmḗtrios ho Sōtḗr, "Demetrius the Saviour"; 185 – June 150 BC) reigned as king of the Hellenistic Seleucid Empire from November 162 to June 150 BC. Demetrius grew up in Rome as a hostage, but returned to Greek Syria and overthrew his young cousin Antiochus V Eupator and regent Lysias. Demetrius took control during a turbulent time of the Empire, and spent much of his time fighting off revolts and challenges to his power from threats such as Timarchus and Alexander Balas.

Antiochus V Eupator (Ancient Greek: Αντίοχος Ε' Ευπάτωρ), whose epithet means "of a good father" (c. 172 BC – 162 BC) was a ruler of the Seleucid Empire who reigned from late 164 to 162 BC (based on dates from 1 Maccabees 6:16 and 7:1).

He was appointed as king by the Romans with his protector Lysias as regent.