1833-1914. Greek ecclesiastic and scholar. Born of poor parents in Constantinople, he was educated theologically at Halki and in 1856 went to Germany where he studied at Leipzig, Berlin, and Munich. In 1861 he became professor in Halki, in 1875 metropolitan of Serrae, and in 1877 of Nicomedia (until 1909). His fame springs from his publication in 1883 of the Didache of the Twelve Apostles, from a manuscript of the Metochion of the in Constantinople (residence for the visiting patriarch of Jerusalem) often called “the Jerusalem manuscript” (written in 1056). It was removed to Jerusalem in 1887. From the same manuscript he previously published (1875) 1 and 2 Clement, both in complete form for the first time. Bryennios was an Orthodox representative at the Bonn Reunion Conference* of 1875 and later wrote a critique of the encyclical Satis Cognitum.