"Prusias ad Hypium (Ancient Greek: Προῦσα πρὸς τῷ Ὑππίῳ ποταμῷ) was a city in ancient Bithynia, and afterwards in the late Roman province of Honorias. In ...
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the 4th century it became a bishopric that was a suffragan of Claudiopolis in Honoriade. Before its conquest by King Prusias I of Bithynia, it was named Cierus or Kieros (Ancient Greek: Κίερος). Photius writes that it was called Kieros, after the river which flows by it." - (en.wikipedia.org 26.09.2022)
- Latitude40.906112670898
- Longitude31.148056030273
