Zipoetes I of Bithynia

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Ziopoetes I
Basileus of Bithynia
Kings of Bithynia
Reignc. 326 BC - 278 BC
SuccessorNicomedes I
Bornc. 354 BC
Died278 BC (age 76)
IssueNicomedes I
Zipoetes II

Zipoetes I, also Zipoites I or Ziboetes I, possibly Tiboetes I (Greek: Zιπoίτης or Zιβoίτης (three syllables, oe is a diphthong); lived c. 354 BC – 278 BC, ruled c. 326 BC – 278 BC) was the second independent ruler of Bithynia.


He succeeded his father Bas on the throne in about 326 BC and reigned for forty-eight years, waging successful wars with Lysimachus and Antiochus, the son of Seleucus I Nicator.[1] In 315 BC he waged war against Astacus and Chalcedon, which failed in the face of a relief army sent by Antigonus I Monophthalmus.[2] In 301, after Antigonus' death, he attacked again, and was victorious, but Astacus was destroyed in the war, he founded a city which was called Zipoetium (after himself) at the foot of Mount Lypedron; the exact locations of both the city and the mountain are unknown.

He lived to around the age of seventy-six, and left behind him four children, the eldest of whom, Nicomedes, succeeded him,[3] he was the first ruler of Bithyinia to assume the title of basileus (king), assuming this title in the year 297 BC. His successors adopted this date as the first year of the Bithynian calendar, which was used in some places as late as the 5th century AD.[4]


  1. ^ Memnon, History of Heracleia, 6, 9
  2. ^ Diodorus Siculus, Bibliotheca, xix. 60
  3. ^ Memnon, 12; Stephanus, Ethnica, s.v. "Zipoition"
  4. ^ Cohen 1996, p. 61


  • Cohen, Getzel M.; The Hellenistic Settlements in Europe, the Islands and Asia Minor (1996), "Zipoition"
  • Smith, William (editor); Dictionary of Greek and Roman Biography and Mythology, "Ziboetes", Boston, (1867)
  •  This article incorporates text from a publication now in the public domainSmith, William, ed. (1870). "Ziboetes or Zipoetes". Dictionary of Greek and Roman Biography and Mythology. 3. p. 1329.
Preceded by
Dynast and King of Bithynia
326 BC – 278 BC
Succeeded by
Nicomedes I
Zipoetes II