Photius, patriarch of Constantinople; was the great promoter of the schism on the question of the procession of the Holy Ghost, between the Eastern and the Western divisions of the Church, denying as he did, and erasing from the creed the filioque article (q.v.); (d. 891).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Phonograph * Photogravure