Eumenes II King of the Kingdom of Pergamon from 197 BC to 159 BC.
Eumenes II was a ruler of Pergamon, and a son of Attalus I Soter and queen Apollonis and a member of the Attalid dynasty of Pergamon. He 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.

Following the Peace of Apamea in 188 BC, he received the regions of Phrygia, Lydia, Pisidia, Pamphylia, and parts of Lycia from his Roman allies. By dividing Asia Minor between their allies Rhodes and Pergamon the Romans made sure that neither state would be able to become too powerful in the region. He later fell out of favour with the Romans after they suspected him of conspiring with Perseus of Macedon.

When Eumenes' health began to weaken his brother Attalus II ascended to the throne as a co-ruler in 160 BC. Since Eumenes' and Stratonice's son was still a minor, the throne was assumed by Attalus, who also married Eumenes' widow Stratonice in 158 BC upon becoming king.
Eumenes II
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