King Eumenes II of Pergamum

Eumenes II "Savior"
King of Pergamon
Bust of Eumenes II
Reign	197-159 BC
Predecessor	Attalus I
Successor	Attalus II
Born	Before 220 BC Kingdom of Pergamon
Died	159 BC Pergamom
Consort	Stratonice
Issue	Attalus III Eumenes III(?)
Greek	Εὐμένης
House	Attalid dynasty
Father	Attalus I
Mother	Apollonis
Religion	Greek Polytheism

Eumenes II (/juːˈmɛniːz/; Greek: Εὐμένης Βʹ; ruled 197–159 BC) surnamed Soter meaning "Savior" was a ruler of Pergamon, and a son of Attalus I Soter and queen Apollonis and a member of the Attalid dynasty of Pergamon.

The eldest son of king Attalus I and queen Apollonis, Eumenes was presumably born prior to 220 BC and was the eldest of 4 sons to Attalus I. Eumenes followed in his father's footsteps upon becoming king and collaborated with the Romans to oppose first Macedonian, then Seleucid expansion towards the Aegean, leading to the defeat of Antiochus the Great at the Battle of Magnesia in 190 BC.

Eumenes had followed his father's footsteps and aided the Romans whenever he could, firstly in the Roman-Seleucid War, where he both informed them by sending his brother Attalus II and sided with the Romans, successfully aiding Rome in defeating Antiochus III in the Battle of Magnesia. He then aided the Romans in the War against Nabis where he aided both the Aetolian and Achaean leagues to defeat the Spartan tyrant Nabis, and lastly in the Third Macedonian War where he aided the Romans in defeating the Macedonian and Thracian army in the Battle of Callinicus against Perseus of Macedon. He was then at war with the Bithynian king Prusias I in 183 BC, although being defeated, he received Roman support which ended in his victory.