# Fourth Council of Constantinople (869)

URL: https://christianity-history.com/timeline/869-fourth-council-of-constantinople
Location: Constantinople
Themes: Council

A council, recognized as ecumenical by the Catholic Church, deposes Photius. At this point in the timeline (869), the Bishop of Rome was Pope Adrian II (14 December 867 – 14 December 872).

## Why it matters
Fourth Council of Constantinople mattered because its decisions defined doctrine, discipline or church order for generations of Christians.

Pope at the time: [Pope Adrian II](https://christianity-history.com/popes/pope-adrian-ii)

## Sources
- [Wikipedia — Fourth Council of Constantinople (Catholic Church)](https://en.wikipedia.org/wiki/Fourth_Council_of_Constantinople_(Catholic_Church))
- [Encyclopaedia Britannica topic lookup — Fourth Council of Constantinople](https://www.britannica.com/search?query=Fourth+Council+of+Constantinople)
- [Wikipedia — Medieval Church (period overview)](https://en.wikipedia.org/wiki/History_of_the_Catholic_Church#Middle_Ages)