Nicomedia (/ˌnɪkəˈmiːdiə/; Greek: Νικομήδεια, Nikomedeia; modern İzmit) was an ancient Greek city located in what is now Turkey. In 286, Nicomedia became...

Adrian of Nicomedia (also known as Hadrian) or Saint Adrian (Greek: Ἁδριανὸς Νικομηδείας, romanized: Adrianos Nikomēdeias, died 4 March 306) was a Herculian...

Juliana of Nicomedia (Greek: Ίουλιανή Νικομηδείας) is an Anatolian Christian saint, said to have suffered martyrdom during the Diocletianic persecution...

Eusebius of Nicomedia (/juːˈsiːbiəs/; Greek: Εὐσέβιος; died 341) was an Arian priest who baptized Constantine the Great on his deathbed in 337. A fifth-century...

rejected his overtures and laid siege to Nicomedia (modern İzmit). In 1337, Andronikos effectively abandoned Nicomedia as he led his army to Albania. The besieged...

St. Eleutherius of Nicomedia (died 303) was a soldier who was martyred under Diocletian. He was accused of trying to burn the palace of Diocletian. He...

The Metropolis of Nicomedia (Greek: Μητρόπολις Νικομηδείας) was an ecclesiastical territory (metropolis) of the Ecumenical Patriarchate of Constantinople...

Arrian of Nicomedia (/ˈæriən/; Greek: Ἀρριανός Arrianos; Latin: Lucius Flavius Arrianus; c. 86/89 – c. after 146/160 AD) was a Greek historian, public...

The 20,000 Martyrs of Nicomedia refers to victims of persecution of Christians in Nicomedia, Bithynia (modern Izmit, Turkey) by the Roman emperors Diocletian...

Cecropius of Nicomedia was a bishop of Nicomedia and a key player in the Arian controversy. Cecropius, a semi-Arian, had been Bishop of Laodicea, and...