Sergius II of Constantinople was the ninety ninth patriarch of Constantinople, serving from 999 to 1019. He was a firm opponent of the use of the term filioque in the creed.
Little is known of the early life of Sergius II. He was an abbot of a monastery in Constantinople when he was elected patriarch. The year he became patriarch is shown variously as either 999 or 1001. The date commonly used by the Orthodox is 999. He was among the first patriarchs to use the title Ecumenical Patriarch, this over the objections of the Pope of Rome.
Sergius II was a firm opponent of the addition of the term filioque to the Nicene-Constantinopolitan Creed. Over this issue Sergius was alleged to have removed the name of the Pope of Rome, Sergius IV, from the diptychs of the Church of Constantinople, although often changes in the incumbency of the Roman throne meant that a Pope's name would be omitted on diptychs because of slow communications of the time.
| Sergius II of Constantinople | ||
|---|---|---|
| Preceded by: Sisinnius II |
Patriarch of Constantinople 999-1019 |
Succeeded by: Eustathius |