Dio Cassius
E204108
Greek-language writer
Roman senator
ancient Roman historian
author
consul of the Roman Empire
historical work
historiographical work
Dio Cassius was a Roman statesman and historian best known for his extensive work "Roman History," which chronicles the Roman Empire from its founding to his own time.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Dio Cassius canonical | 5 |
| Dio Cassius Cocceianus | 1 |
| Lucius Cassius Dio | 1 |
| Lucius Cassius Dio Cocceianus | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1703197 — 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: Dio Cassius Context triple: [Donations of Alexandria, recordedBy, Dio Cassius]
-
A.
Gnaeus Domitius Ahenobarbus
Gnaeus Domitius Ahenobarbus was a Roman senator and aristocrat of the Julio-Claudian dynasty, best known as the biological father of the emperor Nero.
-
B.
Quintus Poppaedius Silo
Quintus Poppaedius Silo was a leading Marsic noble and military commander who became one of the principal leaders of the Italian allies against Rome during the Social War.
-
C.
Gaius
Gaius was a prominent 2nd-century Roman jurist whose legal writings, especially his Institutes, significantly shaped later Roman and European legal traditions.
-
D.
Herodian
Herodian refers to a member of the Herodian dynasty, the ruling family of client kings in Judea and surrounding regions during the late Second Temple period under Roman authority.
-
E.
Gnaeus Julius Agricola
Gnaeus Julius Agricola was a prominent 1st-century Roman general and governor of Britain, best known for his military campaigns expanding Roman control on the island and as the subject of Tacitus’ biography "Agricola."
- 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: Dio Cassius Target entity description: Dio Cassius was a Roman statesman and historian best known for his extensive work "Roman History," which chronicles the Roman Empire from its founding to his own time.
-
A.
Gnaeus Domitius Ahenobarbus
Gnaeus Domitius Ahenobarbus was a Roman senator and aristocrat of the Julio-Claudian dynasty, best known as the biological father of the emperor Nero.
-
B.
Quintus Poppaedius Silo
Quintus Poppaedius Silo was a leading Marsic noble and military commander who became one of the principal leaders of the Italian allies against Rome during the Social War.
-
C.
Gaius
Gaius was a prominent 2nd-century Roman jurist whose legal writings, especially his Institutes, significantly shaped later Roman and European legal traditions.
-
D.
Herodian
Herodian refers to a member of the Herodian dynasty, the ruling family of client kings in Judea and surrounding regions during the late Second Temple period under Roman authority.
-
E.
Gnaeus Julius Agricola
Gnaeus Julius Agricola was a prominent 1st-century Roman general and governor of Britain, best known for his military campaigns expanding Roman control on the island and as the subject of Tacitus’ biography "Agricola."
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
Greek-language writer
ⓘ
Roman senator ⓘ Roman senator ⓘ ancient Roman historian ⓘ author ⓘ consul of the Roman Empire ⓘ historical work ⓘ historiographical work ⓘ |
| alternativeName |
Cassius Dio
ⓘ
Dio Cassius ⓘ
surface form:
Dio Cassius Cocceianus
|
| author | Dio Cassius self-linksurface differs ⓘ |
| birthDate | c. 155 CE ⓘ |
| birthEmpire | Roman Empire ⓘ |
| birthPlace |
Nicaea
ⓘ
surface form:
Nicaea in Bithynia
|
| birthProvince |
Bithynia
ⓘ
surface form:
Bithynia et Pontus
|
| birthRegion | Bithynia ⓘ |
| citizenship | Roman Empire ⓘ |
| consulColleague |
Severus Alexander
ⓘ
surface form:
Alexander Severus
|
| consulYear | 229 CE ⓘ |
| coverageEnd | reign of Severan emperors ⓘ |
| coverageStart | foundation of Rome ⓘ |
| deathDate | after 229 CE ⓘ |
| ethnicOrigin | Greek ⓘ |
| father | Cassius Apronianus ⓘ |
| fullName |
Dio Cassius
self-linksurface differs
ⓘ
surface form:
Lucius Cassius Dio
|
| genre |
military history
ⓘ
political history ⓘ |
| governedProvince |
Africa Proconsularis
ⓘ
surface form:
Africa (possibly as proconsul)
Dalmatia ⓘ Pannonia ⓘ Smyrna (as legate or curator) ⓘ |
| historicalPeriodDescribed |
Roman Empire
ⓘ
Roman Kingdom ⓘ Roman Republic ⓘ |
| influenced | later Byzantine historians ⓘ |
| knownFor |
account of the early Roman Empire
ⓘ
detailed narrative of the late Roman Republic ⓘ |
| language |
Ancient Greek
ⓘ
Ancient Greek ⓘ |
| notableWork |
Historia Romana
ⓘ
surface form:
Roman History
|
| numberOfBooks | 80 ⓘ |
| officeHeld |
Roman senator
ⓘ
ordinary consul ⓘ suffect consul ⓘ |
| profession | orator ⓘ |
| residence |
Nicaea
ⓘ
Rome ⓘ |
| servedUnderEmperor |
Severus Alexander
ⓘ
surface form:
Alexander Severus
Caracalla ⓘ Commodus ⓘ Elagabalus ⓘ Septimius Severus ⓘ |
| sourceFor |
history of Augustus
ⓘ
history of Julius Caesar ⓘ history of the Severan dynasty ⓘ |
| subject | history of Rome ⓘ |
| usedSources |
Senate records
ⓘ
earlier Roman annalists ⓘ imperial archives ⓘ |
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: Dio Cassius Description of subject: Dio Cassius was a Roman statesman and historian best known for his extensive work "Roman History," which chronicles the Roman Empire from its founding to his own time.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lucius Cassius Dio Cocceianus
this entity surface form:
Lucius Cassius Dio
this entity surface form:
Dio Cassius Cocceianus
subject surface form:
Roman History (Dio Cassius)