Ruler · 300 – 250 BCE

Nicomedes I of Bithynia

Lived 300 – 250 BCE. King of Bithynia (Bithynia), 278 BCE – 255 BCE.

For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the reign.

Lived: 300 BCE – 250 BCE; 50 years
In office: 23 years; one reign
Lines: 1; Bithynia
Left it: ending not on record; nothing on record

King of Bithynia

Bithynia · the 2nd of 9 dated reigns · 326 BCE – 74 BCE

Zipoetes I of Bithynia326 BCE – 278 BCE

Nicomedes I of Bithynia278 BCE – 255 BCE

Etazeta of Bithynia255 BCE – 254 BCE

Ziaelas of Bithynia254 BCE – 228 BCE

Prusias I of Bithynia228 BCE – 182 BCE

4 after

ending not on recordthis entry

Reigned 278 BCE – 255 BCE · 23 years

Came to it: the child of the ruler before, on record
Left it: ending not on recordnothing on record: no death date to read the end against

Open in the atlas

Nicomedes I of Bithynia in the atlas: the article, every line they sat in, and the map in their years.
Analyse the succession of Bithynia: every reign, how each ended, and the numbers over them.
States of Location unknown, and every state with a page.

Wikidata Q343604 (CC0) · the reigns from Wikidata's P39 terms, the rulers' own articles read by grammar (sentences quoted above, CC BY-SA 4.0) and Kokkonen & Sundell where they code the line · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.