Prusias II of Bithynia in Wikipedia

Prusias II Cynegus ("the Hunter", c. 182 – 149 BC) was the king of Bithynia. He was the son and successor of Prusias I and Apama III. Prusias joined with Eumenes of Pergamon in a war against Pharnaces I of Pontus (181 - 179 BC). He later invaded the territories of Pergamon (156 - 154 BC), only to be defeated, and the Pergamenes insisted on heavy reparations. Prusias married his maternal cousin Apame IV, a princess from the Antigonid dynasty, by whom he had a son called Nicomedes II. He sent his son Nicomedes II to Rome to ask their help in reducing the amount of these reparations, but Nicomedes revolted and became King.