Council of Constantinople 879–880
E314953
The Council of Constantinople 879–880 was a major ecclesiastical assembly that restored Patriarch Photios I and sought to resolve the conflict between Rome and Constantinople during the Photian Schism.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Council of Constantinople 879–880 canonical | 3 |
| Council of Constantinople (879–880) | 1 |
| Photian Council of Constantinople | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2754999 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Council of Constantinople 879–880 Context triple: [Photian Schism, hasSignificantEvent, Council of Constantinople 879–880]
-
A.
Council of Constantinople 861
The Council of Constantinople in 861 was an Eastern Church synod convened under Emperor Michael III and Patriarch Photius I that played a key role in the disputes between Rome and Constantinople during the Photian Schism.
-
B.
Council of Constantinople 867
The Council of Constantinople of 867 was an Eastern church council convened under Patriarch Photius I that condemned papal interference and deepened the rift between the Byzantine and Roman churches.
-
C.
First Council of Constantinople
The First Council of Constantinople was the second ecumenical council of the Christian Church, held in 381, which expanded the Nicene Creed and clarified Trinitarian doctrine against Arian and other heresies.
-
D.
Third Council of Constantinople
The Third Council of Constantinople was a 7th-century ecumenical council that condemned Monothelitism and affirmed that Christ possesses both a divine and a human will.
-
E.
Lateran Council of 649
The Lateran Council of 649 was a significant 7th-century ecclesiastical assembly in Rome that condemned Monothelitism and articulated key doctrines on Christology and Marian teaching within the early medieval Church.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Council of Constantinople 879–880 Target entity description: The Council of Constantinople 879–880 was a major ecclesiastical assembly that restored Patriarch Photios I and sought to resolve the conflict between Rome and Constantinople during the Photian Schism.
-
A.
Council of Constantinople 861
The Council of Constantinople in 861 was an Eastern Church synod convened under Emperor Michael III and Patriarch Photius I that played a key role in the disputes between Rome and Constantinople during the Photian Schism.
-
B.
Council of Constantinople 867
The Council of Constantinople of 867 was an Eastern church council convened under Patriarch Photius I that condemned papal interference and deepened the rift between the Byzantine and Roman churches.
-
C.
First Council of Constantinople
The First Council of Constantinople was the second ecumenical council of the Christian Church, held in 381, which expanded the Nicene Creed and clarified Trinitarian doctrine against Arian and other heresies.
-
D.
Third Council of Constantinople
The Third Council of Constantinople was a 7th-century ecumenical council that condemned Monothelitism and affirmed that Christ possesses both a divine and a human will.
-
E.
Lateran Council of 649
The Lateran Council of 649 was a significant 7th-century ecclesiastical assembly in Rome that condemned Monothelitism and articulated key doctrines on Christology and Marian teaching within the early medieval Church.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
church council
ⓘ
ecumenical council ⓘ event ⓘ |
| alsoKnownAs |
Fourth Council of Constantinople
ⓘ
surface form:
Fourth Council of Constantinople (Eastern Orthodox)
Council of Constantinople 879–880 ⓘ
surface form:
Photian Council of Constantinople
|
| approvedBy |
Pope John VIII
ⓘ
surface form:
Pope John VIII (contemporaneously)
|
| century | 9th century ⓘ |
| chronologicalPredecessor | Council of Constantinople 869–870 ⓘ |
| chronologicalSuccessor |
Council of Constantinople 1351
ⓘ
surface form:
Council of Constantinople 1341–1351
|
| convenedBy |
Byzantine Emperor Basil I
ⓘ
surface form:
Emperor Basil I
|
| convokedBy |
Photios I of Constantinople
ⓘ
surface form:
Patriarch Photios I of Constantinople
|
| country | Byzantine Empire ⓘ |
| declared |
anathemas against opponents of Photios lifted
ⓘ
restoration of communion between Rome and Constantinople (at that time) ⓘ |
| denomination |
Eastern Orthodox Christianity
ⓘ
surface form:
Eastern Orthodox Church
Roman Catholicism ⓘ
surface form:
Roman Catholic Church
|
| documentProduced | synodal acts of the Council of Constantinople 879–880 ⓘ |
| endTime | 880 ⓘ |
| hasEffect |
annulment of the Council of Constantinople 869–870 (in Eastern tradition)
ⓘ
deposition of Patriarch Ignatios declared invalid ⓘ reconciliation between Rome and Constantinople (temporary) ⓘ restoration of Photios I as Patriarch of Constantinople ⓘ |
| language | Greek ⓘ |
| location |
Constantinople (probable)
ⓘ
surface form:
Constantinople
Hagia Sophia ⓘ |
| mainSubject | Photian Schism ⓘ |
| notRecognizedAsEcumenicalBy |
Roman Catholicism
ⓘ
surface form:
Roman Catholic Church
|
| numberOfBishops | approximately 383 ⓘ |
| opposedTo | Council of Constantinople 869–870 ⓘ |
| participant |
Photios I of Constantinople
ⓘ
bishops of the Eastern Church ⓘ legates of Pope John VIII ⓘ |
| partOf |
history of the Byzantine Empire
ⓘ
history of the Eastern Orthodox Church ⓘ history of the Papacy ⓘ |
| presidedOverBy | Photios I of Constantinople ⓘ |
| recognizedAsEcumenicalBy |
Eastern Orthodox Christianity
ⓘ
surface form:
Eastern Orthodox Church
|
| region | Eastern Mediterranean ⓘ |
| religion | Christianity ⓘ |
| significance |
important stage in the development of East–West ecclesiastical relations
ⓘ
key event in the Photian Schism ⓘ |
| startTime | 879 ⓘ |
| topic |
Filioque clause in the Nicene Creed
ⓘ
surface form:
Filioque clause
jurisdiction over Bulgaria ⓘ papal primacy ⓘ relations between the Eastern and Western Churches ⓘ validity of Photios I’s patriarchate ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Council of Constantinople 879–880 Description of subject: The Council of Constantinople 879–880 was a major ecclesiastical assembly that restored Patriarch Photios I and sought to resolve the conflict between Rome and Constantinople during the Photian Schism.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Council of Constantinople (879–880)
this entity surface form:
Photian Council of Constantinople