Charles IV, Duke of Mantua and Montferrat
E674342
Charles IV, Duke of Mantua and Montferrat, was a 17th-century Italian nobleman and the last reigning duke of the Gonzaga line, whose misrule and political entanglements contributed to the decline and eventual loss of his territories.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Charles IV, Duke of Mantua and Montferrat canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7546687 — 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: Charles IV, Duke of Mantua and Montferrat Context triple: [Ercole Antonio Mattioli, employer, Charles IV, Duke of Mantua and Montferrat]
-
A.
Alfonso IV d’Este, Duke of Modena
Alfonso IV d’Este, Duke of Modena, was a 17th-century Italian nobleman and ruler of the Duchy of Modena and Reggio from the House of Este, noted as the father of Mary of Modena, future queen consort of England.
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B.
Federico II Gonzaga
Federico II Gonzaga was a 16th-century Italian nobleman who became the first Duke of Mantua and a prominent Renaissance patron of the arts and architecture.
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C.
Francesco V d'Este
Francesco V d'Este was the last reigning Duke of Modena and Reggio, a 19th-century Italian noble who lost his throne during the unification of Italy.
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D.
Ludovico
Ludovico is an Italian given name, historically borne by various notable figures in art, music, and nobility.
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E.
Vincenzo Gonzaga
Vincenzo Gonzaga was an Italian nobleman of the Gonzaga family who ruled as Duke of Guastalla in the early modern period.
- 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: Charles IV, Duke of Mantua and Montferrat Target entity description: Charles IV, Duke of Mantua and Montferrat, was a 17th-century Italian nobleman and the last reigning duke of the Gonzaga line, whose misrule and political entanglements contributed to the decline and eventual loss of his territories.
-
A.
Alfonso IV d’Este, Duke of Modena
Alfonso IV d’Este, Duke of Modena, was a 17th-century Italian nobleman and ruler of the Duchy of Modena and Reggio from the House of Este, noted as the father of Mary of Modena, future queen consort of England.
-
B.
Federico II Gonzaga
Federico II Gonzaga was a 16th-century Italian nobleman who became the first Duke of Mantua and a prominent Renaissance patron of the arts and architecture.
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C.
Francesco V d'Este
Francesco V d'Este was the last reigning Duke of Modena and Reggio, a 19th-century Italian noble who lost his throne during the unification of Italy.
-
D.
Ludovico
Ludovico is an Italian given name, historically borne by various notable figures in art, music, and nobility.
-
E.
Vincenzo Gonzaga
Vincenzo Gonzaga was an Italian nobleman of the Gonzaga family who ruled as Duke of Guastalla in the early modern period.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
17th-century Italian person
ⓘ
Italian noble ⓘ duke ⓘ human ⓘ nobleman ⓘ |
| birthDate | 1652-05-06 ⓘ |
| birthPlace | Paris ⓘ |
| burialPlace | Padua NERFINISHED ⓘ |
| causeOfEndOfReign | Austrian occupation of Mantua ⓘ |
| countryOfCitizenship |
Duchy of Mantua
NERFINISHED
ⓘ
Duchy of Nevers NERFINISHED ⓘ |
| deathDate | 1708-07-05 ⓘ |
| deathPlace | Padua NERFINISHED ⓘ |
| dynasty | Gonzaga NERFINISHED ⓘ |
| endCause | extinction of the Gonzaga ducal line in Mantua ⓘ |
| familyName | Gonzaga NERFINISHED ⓘ |
| father | Charles III, Duke of Mantua and Montferrat NERFINISHED ⓘ |
| givenName | Charles ⓘ |
| involvedIn |
Italian politics of the late 17th century
ⓘ
War of the Spanish Succession NERFINISHED ⓘ |
| knownFor |
financial mismanagement of his territories
ⓘ
political dependence on France ⓘ selling or pledging ducal assets to cover debts ⓘ |
| languageSpoken |
French
ⓘ
Italian ⓘ |
| memberOf | House of Gonzaga NERFINISHED ⓘ |
| mother | Maria Gonzaga NERFINISHED ⓘ |
| nobleTitle |
Duke
ⓘ
Prince ⓘ |
| notableFor |
being the last reigning duke of the main Gonzaga line in Mantua
ⓘ
loss of Mantua to the Habsburgs ⓘ loss of Montferrat to the House of Savoy ⓘ |
| positionHeld |
Duke of Mantua
NERFINISHED
ⓘ
Duke of Montferrat NERFINISHED ⓘ Duke of Nevers NERFINISHED ⓘ Duke of Rethel NERFINISHED ⓘ Marquis of Montferrat NERFINISHED ⓘ |
| predecessor | Charles III, Duke of Mantua and Montferrat NERFINISHED ⓘ |
| reignEnd | 1708 ⓘ |
| reignStart | 1665 ⓘ |
| religion |
Roman Catholicism
ⓘ
surface form:
Catholicism
|
| residence |
Mantua
NERFINISHED
ⓘ
Nevers NERFINISHED ⓘ |
| spouse |
Anna Caterina Gonzaga
NERFINISHED
ⓘ
Anna Isabella Gonzaga NERFINISHED ⓘ Suzanne Henriette of Lorraine NERFINISHED ⓘ |
| successor |
Ferdinand Charles, Duke of Mantua and Montferrat
NERFINISHED
ⓘ
Habsburg Monarchy (in Mantua) NERFINISHED ⓘ House of Savoy (in Montferrat) NERFINISHED ⓘ |
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: Charles IV, Duke of Mantua and Montferrat Description of subject: Charles IV, Duke of Mantua and Montferrat, was a 17th-century Italian nobleman and the last reigning duke of the Gonzaga line, whose misrule and political entanglements contributed to the decline and eventual loss of his territories.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Ercole Antonio Mattioli