Zipoetes II: rebel king of Bithynia (r.278-276 BCE).
King Zipoetes I of Bithynia died in 278, after a reign of almost half a century, in which he had been able to maintain his independence. seventy-six years old. His son Nicomedes I succeeded him and immediately killed all his brothers, although Zipoetes II managed to escape and fought a civil war against his elder brother.
Nicomedes inherited a conflict with the Seleucid king Antiochus I Soter and allied himself to Antigonus II Gonatas of Macedonia, but in the end, the Seleucid invasion was broken off before it threatened the Bithynian independence. Nicomedes could now focus on his brother and sought new allies: the Galatians, bands of Celtic warriors who had already created havoc in southwestern Europe. Nicomedes transferred them to Asia and used them against Zipoetes, who was captured in 276 and executed.