John VII of Constantinople

John VII of Constantinople
Ecumenical Patriarch of Constantinople
The embassy of John VII in 829, between Emperor Theophilos (right) and Caliph Al-Ma'mun, from the Madrid Skylitzes.
Installed837
Term ended843
Personal details
DenominationChalcedonian Christianity
This page of the iconodule Chludov Psalter illustrates the line "They gave me gall to eat; and when I was thirsty they gave me vinegar to drink" with a picture of a soldier offering Christ vinegar on a sponge attached to a pole. John the Grammarian is depicted rubbing out a painting of Christ with a similar sponge attached to a pole. John is caricatured, here as on other pages, with untidy straight hair sticking out in all directions, which was considered ridiculous by the Byzantines.

John VII, surnamed Grammatikos or Grammaticus, i.e., "the Grammarian" (Greek: Ἰωάννης Γραμματικός, Iōannīs Grammatikos; died before 867), was Ecumenical Patriarch of Constantinople from January 21, 837 to March 4, 843, died before 867. He is not to be confused with the much earlier philosopher John Philoponos.