Person

Eumenes I

d. 241 BCE · 3rd century BCE

Eumenes I was ruler of Pergamon from 263 to 241 BCE, the nephew and adopted heir of Philetaerus. He defeated the Seleucid king Antiochus I near Sardis around 261 BCE, making Pergamon independent and extending its territory, though he never took the title king. He was succeeded by his cousin Attalus I, the first Attalid to call himself king.

Eumenes I
Image: Unknown · CC BY-SA 3.0 · Wikimedia Commons

Mentioned in 1 state history

Kingdom of Pergamon

See also

Cite this entry
APA
The Epoch Institute. (2026). Eumenes I. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/eumenes-i
MLA
“Eumenes I.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/eumenes-i. Accessed .
Chicago
The Epoch Institute. “Eumenes I.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/eumenes-i.
Harvard
The Epoch Institute (2026) ‘Eumenes I’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/eumenes-i (Accessed: ).

Last reviewed October 2026Random entry ↻