Bithynia

thumb|300px|Bithynia and Pontus as a province of the Roman Empire, 125 AD Bithynia (; ) is a geographical region of northwestern Asia Minor (in present-day Turkey), adjoining the Sea of Marmara, the Bosporus, and the Black Sea. It borders Mysia to the southwest, Paphlagonia to the northeast along the Black Sea coast, and Phrygia to the southeast towards the interior of Asia Minor.

synod

The Bebryces () were a tribe of people who lived in Bithynia. According to Strabo they were one of the many Thracian tribes that had crossed from Europe into Asia, although modern scholars have rather argued for a Celtic origin.

nymph in Greek mythology, consort of Poseidon

thumb|305x305px|Bithynia, the region inhabited by the Bithyni thumb|304x304px|Struma (river)|Strymon river, where the Bithyni are said to have originally lived under the name Strymoni

hellenistic kingdom that existed from the 4th century BC to 74 BC

The Mariandyni () were an Thracian origin tribe in the north-east of Bithynia. Their country was called Mariandynia (Μαριανδυνία, Stephanus of Byzantium s. v.) and Pliny speaks of a Sinus Mariandynus ("Mariandynian Gulf") on their coast. Greek myths have Mariandynus as their presumed eponymous hero.

diocese of the Greek Orthodox Church

Ottoman province in northwestern Anatolia