First Council of the Lateran

E310014

12th-century event church council ecumenical council

The First Council of the Lateran was a 12th-century ecumenical council of the Catholic Church convened by Pope Callixtus II that confirmed the Concordat of Worms and addressed church reform and clerical discipline.

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All labels observed (3)

Label	Occurrences
First Lateran Council	5
First Council of the Lateran canonical	3
Lateran I	1

How this entity was disambiguated

This entity first appeared as the object of triple T2916427 — 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: First Council of the Lateran
Context triple: [Fourth Council of Constantinople, followedBy, First Council of the Lateran]

A. Fourth Lateran Council
The Fourth Lateran Council was a landmark 13th-century ecumenical council of the Catholic Church that enacted wide-ranging reforms in doctrine, church discipline, and Christian society, including defining transubstantiation and regulating clerical and lay life.
B. 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.
C. 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.
D. 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.
E. Fifth Lateran Council
The Fifth Lateran Council was the 18th ecumenical council of the Catholic Church, convened in Rome (1512–1517) to address church reform, condemn certain philosophical doctrines, and respond to emerging challenges on the eve of the Protestant Reformation.
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: First Council of the Lateran
Target entity description: The First Council of the Lateran was a 12th-century ecumenical council of the Catholic Church convened by Pope Callixtus II that confirmed the Concordat of Worms and addressed church reform and clerical discipline.

A. Fourth Lateran Council
The Fourth Lateran Council was a landmark 13th-century ecumenical council of the Catholic Church that enacted wide-ranging reforms in doctrine, church discipline, and Christian society, including defining transubstantiation and regulating clerical and lay life.
B. 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.
C. 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.
D. 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.
E. Fifth Lateran Council
The Fifth Lateran Council was the 18th ecumenical council of the Catholic Church, convened in Rome (1512–1517) to address church reform, condemn certain philosophical doctrines, and respond to emerging challenges on the eve of the Protestant Reformation.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	12th-century event ⓘ church council ⓘ ecumenical council ⓘ
addressed	abuses in ecclesiastical appointments ⓘ marriage of clergy ⓘ secular interference in church affairs ⓘ unauthorized episcopal elections ⓘ
aim	church reform ⓘ confirm the Concordat of Worms ⓘ regulation of clerical discipline ⓘ
alsoKnownAs	Lateran I ⓘ linked to: First Council of the Lateran
approvedBy	Pope Callixtus II ⓘ linked to: Pope Calixtus II
confirmed	Concordat of Worms ⓘ
convenedBy	Pope Callixtus II ⓘ linked to: Pope Calixtus II
country	Papal States ⓘ
ecumenicalNumber	9 ⓘ
endTime	1123 ⓘ
followedBy	Second Council of the Lateran ⓘ linked to: Second Lateran Council
hasCanonicalStatus	ecumenical ⓘ
heldAtBuilding	Archbasilica of Saint John Lateran ⓘ linked to: Basilica of Saint John Lateran
language	Latin ⓘ
location	Italy ⓘ Lateran Palace ⓘ linked to: Lateran complex Rome ⓘ
numberOfCanonsIssued	22 ⓘ
papacyOf	Pope Callixtus II ⓘ linked to: Pope Calixtus II
participants	abbots ⓘ bishops ⓘ papal legates ⓘ
partOf	history of the Catholic Church ⓘ series of Lateran Councils ⓘ
precededBy	Council of Troyes (1129 is later, so omit) ⓘ
recognizedBy	Roman Catholic Church ⓘ linked to: Catholic Church worldwide
religiousTradition	Catholic Church ⓘ linked to: Catholic Church worldwide
result	codification of reforms against simony ⓘ confirmation of papal authority in episcopal investiture ⓘ reinforcement of clerical celibacy ⓘ strengthening of church discipline ⓘ
startTime	1123 ⓘ
timePeriod	12th century ⓘ
topic	Concordat of Worms ⓘ Investiture Controversy ⓘ church reform ⓘ clerical celibacy ⓘ clerical discipline ⓘ ecclesiastical privileges ⓘ relations between Church and secular rulers ⓘ simony ⓘ

How these facts were elicited