Emperor Constans II

E148789

Byzantine emperor human

Emperor Constans II was a 7th-century Byzantine emperor known for his long and turbulent reign marked by religious controversies, military conflicts with the Arabs, and an unusual relocation of the imperial court to Syracuse in Sicily.

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All labels observed (4)

Label	Occurrences
Constans II	36
Emperor Constans II canonical	4
Byzantine Emperor Constans II	2
Constans II Pogonatus	1

How this entity was disambiguated

This entity first appeared as the object of triple T1303432 — 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: Emperor Constans II
Context triple: [Lateran Council of 649, tookPlaceDuringReignOf, Emperor Constans II]

A. Emperor Constantine IV
Emperor Constantine IV was a 7th-century Byzantine emperor known for defending Constantinople against Arab sieges and for his role in resolving the Monothelite controversy within the Christian Church.
B. Emperor Constantine VI
Emperor Constantine VI was a Byzantine emperor of the Isaurian dynasty who ruled in the late 8th century, known for his troubled reign marked by regency under his mother Irene and eventual deposition and blinding.
C. Heraclius
Heraclius was a 7th-century Byzantine emperor best known for his military campaigns against the Sassanian Persians and early Muslim armies, as well as for reorganizing the empire’s administration and army during a period of major crisis.
D. Basil II
Basil II was a powerful Byzantine emperor (reigned 976–1025) renowned for his military conquests, especially against the Bulgarians, and for strengthening imperial authority.
E. Alexios I Komnenos
Alexios I Komnenos was a Byzantine emperor (r. 1081–1118) known for stabilizing the empire after a period of crisis, initiating the Komnenian restoration, and appealing to the West in ways that helped spark the First Crusade.
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: Emperor Constans II
Target entity description: Emperor Constans II was a 7th-century Byzantine emperor known for his long and turbulent reign marked by religious controversies, military conflicts with the Arabs, and an unusual relocation of the imperial court to Syracuse in Sicily.

A. Emperor Constantine IV
Emperor Constantine IV was a 7th-century Byzantine emperor known for defending Constantinople against Arab sieges and for his role in resolving the Monothelite controversy within the Christian Church.
B. Emperor Constantine VI
Emperor Constantine VI was a Byzantine emperor of the Isaurian dynasty who ruled in the late 8th century, known for his troubled reign marked by regency under his mother Irene and eventual deposition and blinding.
C. Heraclius
Heraclius was a 7th-century Byzantine emperor best known for his military campaigns against the Sassanian Persians and early Muslim armies, as well as for reorganizing the empire’s administration and army during a period of major crisis.
D. Basil II
Basil II was a powerful Byzantine emperor (reigned 976–1025) renowned for his military conquests, especially against the Bulgarians, and for strengthening imperial authority.
E. Alexios I Komnenos
Alexios I Komnenos was a Byzantine emperor (r. 1081–1118) known for stabilizing the empire after a period of crisis, initiating the Komnenian restoration, and appealing to the West in ways that helped spark the First Crusade.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	Byzantine emperor ⓘ human ⓘ
alsoKnownAs	Constans II Pogonatus ⓘ linked to: Emperor Constans II Heraclius Constantine ⓘ Konstantinos Pogonatos ⓘ
birthDate	630 ⓘ
birthPlace	Constantinople ⓘ linked to: Constantinople (probable)
capital	Constantinople ⓘ linked to: Constantinople (probable)
causeOfDeath	bludgeoning ⓘ
child	Constantine IV ⓘ linked to: Emperor Constantine IV Heraclius (son of Constans II) ⓘ Tiberius (son of Constans II) ⓘ
conflict	Arab–Byzantine wars ⓘ First Arab siege of Constantinople ⓘ linked to: First Arab siege of Constantinople (674–678) wars against the Rashidun Caliphate ⓘ wars against the Umayyad Caliphate ⓘ
coronationDate	641 ⓘ
countryOfCitizenship	Byzantine Empire ⓘ
deathDate	15 September 668 ⓘ
deathPlace	Syracuse ⓘ
dynasty	Heraclian dynasty ⓘ
era	7th century ⓘ
father	Constantine III ⓘ
givenName	Heraclius ⓘ
grandfather	Heraclius ⓘ
issuedEdict	Typos of Constans ⓘ
lostTerritory	Armenia (partial control) ⓘ linked to: Armenia Minor Cyprus (partial control) ⓘ linked to: Cyprus buffer zone Egypt ⓘ
mannerOfDeath	assassination ⓘ
militaryCampaign	campaign in Italy against the Lombards ⓘ campaigns in the Balkans against Slavs ⓘ
mother	Gregoria ⓘ
movedImperialResidenceTo	Syracuse ⓘ
movedImperialResidenceYear	c. 663 ⓘ
notableActionInRome	removed bronze and other materials from Roman monuments ⓘ
policyOnMonothelitism	attempted to silence controversy without doctrinal decision ⓘ
predecessor	Heraclonas ⓘ
regnalNumber	II ⓘ
reignEnd	668 ⓘ
reignStart	641 ⓘ
religion	Chalcedonian Christianity ⓘ
spouse	Fausta ⓘ
style	Augustus ⓘ
successor	Constantine IV ⓘ linked to: Emperor Constantine IV
title	Basileus of the Romans ⓘ linked to: Basileus
visitedCity	Rome ⓘ
yearOfVisitToRome	663 ⓘ

How these facts were elicited

Referenced by (43)

Full triples — surface form annotated when it differs from this entity's canonical label.

Lateran Council of 649 → tookPlaceDuringReignOf → Emperor Constans II ⓘ

Constantine IV → father → Constans II ⓘ

subject linked to: Emperor Constantine IV