Second Council of Lyon
E316610
The Second Council of Lyon was a major 13th-century ecumenical council of the Catholic Church, convened in 1274 to address church reform, attempt reunion with the Eastern Orthodox Church, and organize a new crusade.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Second Council of Lyon canonical | 12 |
| Council of Lyon II | 2 |
| Council of Lyons II | 2 |
| Second Council of Lyon, 1274 | 1 |
| Second Ecumenical Council of Lyon | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2940842 — 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: Second Council of Lyon Context triple: [First Council of Lyon, followedBy, Second Council of Lyon]
-
A.
First Council of Lyon
The First Council of Lyon was a 13th-century ecumenical council of the Catholic Church that addressed the conflict with the Holy Roman Emperor Frederick II, initiated church reforms, and organized a crusade.
-
B.
Council of Constance
The Council of Constance was a major 15th-century ecumenical council of the Catholic Church that ended the Western Schism, condemned Jan Hus, and sought to reform church governance.
-
C.
Second Council of Orange
The Second Council of Orange was a 529 AD church synod in southern Gaul that decisively addressed the Pelagian controversy by affirming the necessity of divine grace in salvation while rejecting strict predestinarianism.
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D.
Council of Pisa
The Council of Pisa was a 1409 ecclesiastical assembly that attempted to resolve the Western Schism by deposing rival popes and electing a new one, ultimately complicating rather than ending the papal dispute.
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E.
Second Council of Nicaea
The Second Council of Nicaea was the seventh ecumenical council of the Christian Church, held in 787, best known for restoring the veneration of icons and condemning iconoclasm.
- 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: Second Council of Lyon Target entity description: The Second Council of Lyon was a major 13th-century ecumenical council of the Catholic Church, convened in 1274 to address church reform, attempt reunion with the Eastern Orthodox Church, and organize a new crusade.
-
A.
First Council of Lyon
The First Council of Lyon was a 13th-century ecumenical council of the Catholic Church that addressed the conflict with the Holy Roman Emperor Frederick II, initiated church reforms, and organized a crusade.
-
B.
Council of Constance
The Council of Constance was a major 15th-century ecumenical council of the Catholic Church that ended the Western Schism, condemned Jan Hus, and sought to reform church governance.
-
C.
Second Council of Orange
The Second Council of Orange was a 529 AD church synod in southern Gaul that decisively addressed the Pelagian controversy by affirming the necessity of divine grace in salvation while rejecting strict predestinarianism.
-
D.
Council of Pisa
The Council of Pisa was a 1409 ecclesiastical assembly that attempted to resolve the Western Schism by deposing rival popes and electing a new one, ultimately complicating rather than ending the papal dispute.
-
E.
Second Council of Nicaea
The Second Council of Nicaea was the seventh ecumenical council of the Christian Church, held in 787, best known for restoring the veneration of icons and condemning iconoclasm.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
13th-century event
ⓘ
Catholic Church council ⓘ church council ⓘ ecumenical council ⓘ |
| addressed |
crusade planning
ⓘ
discipline of religious orders ⓘ financial support for the Holy Land ⓘ papal election procedures ⓘ reform of the clergy ⓘ |
| aimedAt | healing the East–West Schism ⓘ |
| alsoKnownAs |
Fourteenth Ecumenical Council
ⓘ
Lyon II ⓘ |
| approvedDoctrine | Filioque clause in the Creed ⓘ |
| attendedBy |
Eastern (Greek) delegates
ⓘ
Latin Church bishops ⓘ envoys of Byzantine Emperor Michael VIII Palaiologos ⓘ |
| authority | recognized as ecumenical by the Catholic Church ⓘ |
| chronologicalOrder | 14th ecumenical council ⓘ |
| convenedBy | Pope Gregory X ⓘ |
| country | Kingdom of France ⓘ |
| dateOfEcumenicalNumbering | Middle Ages ⓘ |
| endDate | 1274-07-17 ⓘ |
| followedBy | Council of Vienne ⓘ |
| hasNumberOfSessions | 6 ⓘ |
| heldDuringPontificateOf | Pope Gregory X ⓘ |
| language | Latin ⓘ |
| location |
France
ⓘ
Lyon ⓘ |
| mainSubject |
church reform
ⓘ
organization of a crusade ⓘ reunion with the Eastern Orthodox Church ⓘ |
| partOf |
history of the Catholic Church
ⓘ
medieval church councils ⓘ |
| precededBy | First Council of Lyon ⓘ |
| presidedOverBy | Pope Gregory X ⓘ |
| religion |
Catholic Church
ⓘ
linked to:
Roman Catholicism
|
| resultedIn |
approval of a new crusade
ⓘ
constitution Ubi periculum ⓘ imposition of a tithe for crusade financing ⓘ regulation of papal conclaves ⓘ temporary union with some Byzantine representatives ⓘ |
| significantFor |
crusading policy of the late 13th century
ⓘ
development of papal conclave law ⓘ medieval attempts at East–West Church reunion ⓘ |
| startDate | 1274-05-07 ⓘ |
| timePeriod | High Middle Ages ⓘ |
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: Second Council of Lyon Description of subject: The Second Council of Lyon was a major 13th-century ecumenical council of the Catholic Church, convened in 1274 to address church reform, attempt reunion with the Eastern Orthodox Church, and organize a new crusade.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Second Council of Lyon
linked to: Second Council of Lyon
linked to: Second Council of Lyon
subject linked to:
constitution Ubi periculum
subject linked to:
constitution Ubi periculum
subject linked to:
Lyon II
linked to: Second Council of Lyon
linked to: Second Council of Lyon
linked to: Second Council of Lyon