Johann II, Duke of Saxe-Weimar
E443380
Johann II, Duke of Saxe-Weimar, was a German nobleman of the Ernestine Wettin line who ruled the small Thuringian duchy of Saxe-Weimar during the late 16th and early 17th centuries.
All labels observed (2)
| Label | Occurrences |
|---|---|
| John William, Duke of Saxe-Weimar | 2 |
| Johann II, Duke of Saxe-Weimar canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3840776 — 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: Johann II, Duke of Saxe-Weimar Context triple: [Ernestine branch of the House of Wettin, hasMember, Johann II, Duke of Saxe-Weimar]
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A.
Duke Wilhelm Ernst of Saxe-Weimar
Duke Wilhelm Ernst of Saxe-Weimar was an early 18th-century German prince of the Ernestine Wettin line, noted for his strict Lutheran piety and for fostering the cultural life of Weimar, including employing Johann Sebastian Bach at his court.
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B.
Duke Ernst August of Saxe-Weimar
Duke Ernst August of Saxe-Weimar was an 18th-century German nobleman who served as the ruling duke of the small Thuringian state of Saxe-Weimar.
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C.
John Frederick II, Duke of Saxony
John Frederick II, Duke of Saxony, was a 16th-century German nobleman of the Ernestine Wettin line known for his political struggles within the Holy Roman Empire and his patronage of Protestant institutions.
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D.
Christian Ludwig, Margrave of Brandenburg-Schwedt
Christian Ludwig, Margrave of Brandenburg-Schwedt, was an early 18th-century German nobleman and patron of the arts best known as the dedicatee of Johann Sebastian Bach’s Brandenburg Concertos.
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E.
George William, Margrave of Brandenburg-Bayreuth
George William, Margrave of Brandenburg-Bayreuth, was an 18th-century German nobleman and regional ruler in the Holy Roman Empire known for his military and courtly patronage.
- 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: Johann II, Duke of Saxe-Weimar Target entity description: Johann II, Duke of Saxe-Weimar, was a German nobleman of the Ernestine Wettin line who ruled the small Thuringian duchy of Saxe-Weimar during the late 16th and early 17th centuries.
-
A.
Duke Wilhelm Ernst of Saxe-Weimar
Duke Wilhelm Ernst of Saxe-Weimar was an early 18th-century German prince of the Ernestine Wettin line, noted for his strict Lutheran piety and for fostering the cultural life of Weimar, including employing Johann Sebastian Bach at his court.
-
B.
Duke Ernst August of Saxe-Weimar
Duke Ernst August of Saxe-Weimar was an 18th-century German nobleman who served as the ruling duke of the small Thuringian state of Saxe-Weimar.
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C.
John Frederick II, Duke of Saxony
John Frederick II, Duke of Saxony, was a 16th-century German nobleman of the Ernestine Wettin line known for his political struggles within the Holy Roman Empire and his patronage of Protestant institutions.
-
D.
Christian Ludwig, Margrave of Brandenburg-Schwedt
Christian Ludwig, Margrave of Brandenburg-Schwedt, was an early 18th-century German nobleman and patron of the arts best known as the dedicatee of Johann Sebastian Bach’s Brandenburg Concertos.
-
E.
George William, Margrave of Brandenburg-Bayreuth
George William, Margrave of Brandenburg-Bayreuth, was an 18th-century German nobleman and regional ruler in the Holy Roman Empire known for his military and courtly patronage.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
German nobleman
ⓘ
duke ⓘ human ⓘ member of the House of Wettin ⓘ |
| aristocraticTitle | Duke ⓘ |
| aristocraticTitleTerritory | Saxe-Weimar NERFINISHED ⓘ |
| continent | Europe ⓘ |
| countryOfCitizenship | Holy Roman Empire ⓘ |
| dynasticBranch | Ernestine line NERFINISHED ⓘ |
| ethnicGroup | German ⓘ |
| fullName | Johann II, Duke of Saxe-Weimar NERFINISHED ⓘ |
| gender | male ⓘ |
| givenName | Johann NERFINISHED ⓘ |
| governmentFormOfRealm | duchy ⓘ |
| hasTerritorialDesignation | Saxe-Weimar NERFINISHED ⓘ |
| house | House of Wettin NERFINISHED ⓘ |
| languageSpoken | German ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Thuringia NERFINISHED ⓘ |
| locatedInThePoliticalEntity | Holy Roman Empire NERFINISHED ⓘ |
| nobleFamily | Ernestine Wettins NERFINISHED ⓘ |
| nobleRank | duke ⓘ |
| nobleTitle | Duke of Saxe-Weimar NERFINISHED ⓘ |
| partOf | Ernestine duchies NERFINISHED ⓘ |
| positionHeld | Duke of Saxe-Weimar NERFINISHED ⓘ |
| realm | Saxe-Weimar NERFINISHED ⓘ |
| regionRuled | Thuringia NERFINISHED ⓘ |
| ruled | Duchy of Saxe-Weimar NERFINISHED ⓘ |
| socialClass | nobility ⓘ |
| timePeriod |
early 17th century
ⓘ
late 16th 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: Johann II, Duke of Saxe-Weimar Description of subject: Johann II, Duke of Saxe-Weimar, was a German nobleman of the Ernestine Wettin line who ruled the small Thuringian duchy of Saxe-Weimar during the late 16th and early 17th centuries.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
John William, Duke of Saxe-Weimar
this entity surface form:
John William, Duke of Saxe-Weimar