Eugenius
E291024
Eugenius was a late 4th-century usurper of the Western Roman Empire who was defeated and killed by Emperor Theodosius I at the Battle of the Frigidus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eugenius canonical | 13 |
How this entity was disambiguated
This entity first appeared as the object of triple T2594829 — 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: Eugenius Context triple: [Theodosius I, victoryOver, Eugenius]
-
A.
Bonifacius
Bonifacius is the given name of Bonifacius Cornelis de Jonge, a Dutch politician who served as Governor-General of the Dutch East Indies in the early 20th century.
-
B.
Gratian
Gratian was a 4th-century Roman emperor who ruled the Western Roman Empire and is known for his support of Nicene Christianity and military struggles against Gothic and usurper forces.
-
C.
Laurentius
Laurentius is a Latin given name historically borne by several early Christian saints and later adapted into various European forms such as Laurence and Lawrence.
-
D.
Avitus
Avitus was a short-reigned 5th-century Western Roman emperor whose rule was marked by political instability and the empire’s accelerating decline.
-
E.
Arcadius
Arcadius was a late 4th- and early 5th-century Roman emperor who ruled the Eastern Roman Empire and was the elder son of Theodosius I.
- 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: Eugenius Target entity description: Eugenius was a late 4th-century usurper of the Western Roman Empire who was defeated and killed by Emperor Theodosius I at the Battle of the Frigidus.
-
A.
Bonifacius
Bonifacius is the given name of Bonifacius Cornelis de Jonge, a Dutch politician who served as Governor-General of the Dutch East Indies in the early 20th century.
-
B.
Gratian
Gratian was a 4th-century Roman emperor who ruled the Western Roman Empire and is known for his support of Nicene Christianity and military struggles against Gothic and usurper forces.
-
C.
Laurentius
Laurentius is a Latin given name historically borne by several early Christian saints and later adapted into various European forms such as Laurence and Lawrence.
-
D.
Avitus
Avitus was a short-reigned 5th-century Western Roman emperor whose rule was marked by political instability and the empire’s accelerating decline.
-
E.
Arcadius
Arcadius was a late 4th- and early 5th-century Roman emperor who ruled the Eastern Roman Empire and was the elder son of Theodosius I.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
Roman usurper
ⓘ
Western Roman emperor ⓘ usurper ⓘ |
| appointedBy | Arbogast ⓘ |
| conflict |
Battle of the Frigidus
ⓘ
civil war between Eastern and Western Roman Empires ⓘ |
| country | Western Roman Empire ⓘ |
| deathDate | 394 ⓘ |
| deathPlace | Battle of the Frigidus ⓘ |
| employer |
Roman imperial court
ⓘ
surface form:
Western Roman imperial court
|
| givenName | Eugenius self-link ⓘ |
| languageSpoken | Latin ⓘ |
| mannerOfDeath | killed in battle ⓘ |
| nobleTitle | Augustus ⓘ |
| notableEvent |
defeat at the Battle of the Frigidus
ⓘ
elevation to emperor by the magister militum Arbogast ⓘ |
| notableFor | being the last pagan usurper of the Western Roman Empire ⓘ |
| occupation |
imperial official
ⓘ
rhetorician ⓘ |
| opponent | Theodosius I ⓘ |
| partOf | history of the Western Roman Empire ⓘ |
| politicalAlignment | pagan revivalist faction in the Western Empire ⓘ |
| positionHeld |
Western Roman emperors
ⓘ
surface form:
Western Roman Emperor
|
| predecessor | Valentinian II ⓘ |
| reignEnd | 394 ⓘ |
| reignStart | 392 ⓘ |
| religion | paganism ⓘ |
| residence |
Milan
ⓘ
Ravenna ⓘ |
| successor | Honorius ⓘ |
| supportedBy | Arbogast ⓘ |
| timePeriod | late 4th century ⓘ |
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: Eugenius Description of subject: Eugenius was a late 4th-century usurper of the Western Roman Empire who was defeated and killed by Emperor Theodosius I at the Battle of the Frigidus.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Battle of the Frigidus
subject surface form:
Battle of the Frigidus
subject surface form:
Battle of the Frigidus