Prusias I Cholus (Ancient Greek: Προυσίας ὁ Χωλός, romanized: Prousías ho Chōlós, lit.

Prusias was a vigorous and energetic leader; he fought a war against Byzantium (220 BC), seizing its Asiatic territory, a part of Mysia that had been in its possession for a long time.

[1] Then, Prusias defeated the Galatians who Nicomedes I had invited across the Bosphorus to a territory called Arisba, putting to death all of their women and children and letting his men plunder their baggage.

[2] At some point during his reign, Prusias formed a marriage alliance with Demetrius II of Macedon, receiving the latter's daughter, Apama, as his wife.

[7] Philip V of Macedon granted him the ports of Keios and Myrleia in 202 BC, which he renamed Prusias and Apameia[8] respectively.