Ernst I, Duke of Saxe-Altenburg
E860864
Ernst I, Duke of Saxe-Altenburg was a 19th-century German nobleman who ruled the small Thuringian duchy of Saxe-Altenburg within the Ernestine branch of the Wettin dynasty.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ernst I, Duke of Saxe-Altenburg canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9723966 — 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: Ernst I, Duke of Saxe-Altenburg Context triple: [Princess Louise of Saxe-Gotha-Altenburg, sibling, Ernst I, Duke of Saxe-Altenburg]
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A.
Ernst Heinrich of Saxony
Ernst Heinrich of Saxony was a German prince of the House of Wettin and one of the last members of the Saxon royal family to live through the fall of the monarchy and both World Wars.
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B.
Emil Leopold August, Duke of Saxe-Gotha-Altenburg
Emil Leopold August, Duke of Saxe-Gotha-Altenburg, was a German nobleman who ruled the small Thuringian duchy of Saxe-Gotha-Altenburg in the early 19th century and was the father of Princess Louise of Saxe-Gotha-Altenburg.
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C.
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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D.
Ernst of Bavaria
Ernst of Bavaria was a 16th-century Bavarian prince and Catholic archbishop who became a key Counter-Reformation leader and ruler in the Holy Roman Empire.
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E.
Frederick I, Duke of Saxe-Gotha-Altenburg
Frederick I, Duke of Saxe-Gotha-Altenburg, was an 18th-century German prince of the Ernestine Wettin line who ruled the duchy of Saxe-Gotha-Altenburg and continued its development as a minor but culturally active state within the Holy Roman Empire.
- 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: Ernst I, Duke of Saxe-Altenburg Target entity description: Ernst I, Duke of Saxe-Altenburg was a 19th-century German nobleman who ruled the small Thuringian duchy of Saxe-Altenburg within the Ernestine branch of the Wettin dynasty.
-
A.
Ernst Heinrich of Saxony
Ernst Heinrich of Saxony was a German prince of the House of Wettin and one of the last members of the Saxon royal family to live through the fall of the monarchy and both World Wars.
-
B.
Emil Leopold August, Duke of Saxe-Gotha-Altenburg
Emil Leopold August, Duke of Saxe-Gotha-Altenburg, was a German nobleman who ruled the small Thuringian duchy of Saxe-Gotha-Altenburg in the early 19th century and was the father of Princess Louise of Saxe-Gotha-Altenburg.
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C.
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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D.
Ernst of Bavaria
Ernst of Bavaria was a 16th-century Bavarian prince and Catholic archbishop who became a key Counter-Reformation leader and ruler in the Holy Roman Empire.
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E.
Frederick I, Duke of Saxe-Gotha-Altenburg
Frederick I, Duke of Saxe-Gotha-Altenburg, was an 18th-century German prince of the Ernestine Wettin line who ruled the duchy of Saxe-Gotha-Altenburg and continued its development as a minor but culturally active state within the Holy Roman Empire.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
German nobleman
ⓘ
duke ⓘ human ⓘ member of the House of Wettin ⓘ |
| aristocraticRank | duke ⓘ |
| birthName | Ernst Frederick Paul Georg Nikolaus NERFINISHED ⓘ |
| burialPlace | Altenburg NERFINISHED ⓘ |
| continentOfRule | Europe NERFINISHED ⓘ |
| countryOfCitizenship | Duchy of Saxe-Altenburg NERFINISHED ⓘ |
| dateOfBirth | 1826-09-16 ⓘ |
| dateOfDeath | 1908-02-07 ⓘ |
| era |
19th century
ⓘ
early 20th century ⓘ |
| father | Georg, Duke of Saxe-Altenburg NERFINISHED ⓘ |
| fullName | Ernst I, Duke of Saxe-Altenburg NERFINISHED ⓘ |
| gender | male ⓘ |
| givenName | Ernst NERFINISHED ⓘ |
| houseSeat | Altenburg NERFINISHED ⓘ |
| languageOfCourt | German ⓘ |
| memberOfDynasticBranch | Ernestine branch of the House of Wettin NERFINISHED ⓘ |
| memberOfDynasty | House of Wettin NERFINISHED ⓘ |
| monarchOf | Duchy of Saxe-Altenburg NERFINISHED ⓘ |
| mother | Marie Louise of Mecklenburg-Schwerin NERFINISHED ⓘ |
| nobleFamily | House of Wettin NERFINISHED ⓘ |
| nobleTitle | Duke of Saxe-Altenburg NERFINISHED ⓘ |
| participatedIn |
German Confederation politics
ⓘ
German Empire federal structures ⓘ North German Confederation NERFINISHED ⓘ |
| placeOfBirth | Hildburghausen NERFINISHED ⓘ |
| placeOfDeath | Altenburg NERFINISHED ⓘ |
| positionHeld | Duke of Saxe-Altenburg NERFINISHED ⓘ |
| predecessor | Georg, Duke of Saxe-Altenburg NERFINISHED ⓘ |
| regionRuled | Thuringia NERFINISHED ⓘ |
| reignEnd | 1908 ⓘ |
| reignStart | 1853 ⓘ |
| religion | Lutheranism ⓘ |
| residence | Altenburg Castle NERFINISHED ⓘ |
| ruledWithin | Ernestine duchies NERFINISHED ⓘ |
| shortDescription | 19th-century German duke of the Ernestine line who ruled the Duchy of Saxe-Altenburg ⓘ |
| spouse | Agnes of Anhalt-Dessau NERFINISHED ⓘ |
| style | His Ducal Serene Highness ⓘ |
| successor | Ernst II, Duke of Saxe-Altenburg NERFINISHED ⓘ |
| titleHeldDuringGermanEmpire | federal prince of the German Empire ⓘ |
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: Ernst I, Duke of Saxe-Altenburg Description of subject: Ernst I, Duke of Saxe-Altenburg was a 19th-century German nobleman who ruled the small Thuringian duchy of Saxe-Altenburg within the Ernestine branch of the Wettin dynasty.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.