John the Elder, Duke of Holstein-Haderslev
E643129
John the Elder, Duke of Holstein-Haderslev, was a 16th-century Danish-German nobleman of the House of Oldenburg who ruled parts of the duchy of Holstein without leaving legitimate heirs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| John the Elder, Duke of Holstein-Haderslev canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7141289 — 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: John the Elder, Duke of Holstein-Haderslev Context triple: [Duke of Holstein, hasTitleHolder, John the Elder, Duke of Holstein-Haderslev]
-
A.
Ulrich, Duke of Holstein
Ulrich, Duke of Holstein was a 16th-century Danish prince and nobleman, the younger son of King Frederick II of Denmark who held ducal authority in the Holstein region.
-
B.
Eric of Pomerania
Eric of Pomerania was a late medieval Scandinavian king who ruled over Denmark, Norway, and Sweden as the first hereditary monarch of the Kalmar Union.
-
C.
John of Saxony
John of Saxony was a 19th-century German monarch who ruled the Kingdom of Saxony from 1854 to 1873 and played a role in the unification-era politics of Germany.
-
D.
Joachim II Hector
Joachim II Hector was a 16th-century Hohenzollern prince who served as Elector of Brandenburg and played a key role in the political and religious affairs of the Holy Roman Empire during the Reformation.
-
E.
Peter of Oldenburg
Peter of Oldenburg was a 19th-century German-Russian nobleman and philanthropist, known as the son of Grand Duchess Catherine Pavlovna of Russia and for his charitable and educational initiatives in Oldenburg.
- 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: John the Elder, Duke of Holstein-Haderslev Target entity description: John the Elder, Duke of Holstein-Haderslev, was a 16th-century Danish-German nobleman of the House of Oldenburg who ruled parts of the duchy of Holstein without leaving legitimate heirs.
-
A.
Ulrich, Duke of Holstein
Ulrich, Duke of Holstein was a 16th-century Danish prince and nobleman, the younger son of King Frederick II of Denmark who held ducal authority in the Holstein region.
-
B.
Eric of Pomerania
Eric of Pomerania was a late medieval Scandinavian king who ruled over Denmark, Norway, and Sweden as the first hereditary monarch of the Kalmar Union.
-
C.
John of Saxony
John of Saxony was a 19th-century German monarch who ruled the Kingdom of Saxony from 1854 to 1873 and played a role in the unification-era politics of Germany.
-
D.
Joachim II Hector
Joachim II Hector was a 16th-century Hohenzollern prince who served as Elector of Brandenburg and played a key role in the political and religious affairs of the Holy Roman Empire during the Reformation.
-
E.
Peter of Oldenburg
Peter of Oldenburg was a 19th-century German-Russian nobleman and philanthropist, known as the son of Grand Duchess Catherine Pavlovna of Russia and for his charitable and educational initiatives in Oldenburg.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
Danish noble
ⓘ
German noble ⓘ duke ⓘ member of the House of Oldenburg ⓘ nobleman ⓘ |
| burialPlace | Haderslev Cathedral NERFINISHED ⓘ |
| co-rulerWith |
Adolf, Duke of Holstein-Gottorp
NERFINISHED
ⓘ
Christian III of Denmark NERFINISHED ⓘ Frederick II of Denmark NERFINISHED ⓘ |
| countryOfCitizenship | Denmark ⓘ |
| dateOfBirth | 1521-02-25 ⓘ |
| dateOfDeath | 1580-10-01 ⓘ |
| era | Early modern period ⓘ |
| ethnicGroup |
Danish
ⓘ
German ⓘ |
| father | Frederick I of Denmark NERFINISHED ⓘ |
| floruit | 16th century ⓘ |
| givenName | John NERFINISHED ⓘ |
| hasChild | no legitimate children ⓘ |
| house | Oldenburg NERFINISHED ⓘ |
| languageSpoken |
Danish
ⓘ
German ⓘ |
| maritalStatus | unmarried ⓘ |
| mother | Sophie of Pomerania NERFINISHED ⓘ |
| nobleFamily | House of Oldenburg NERFINISHED ⓘ |
| nobleRank | duke ⓘ |
| nobleTitle | Duke of Holstein-Haderslev NERFINISHED ⓘ |
| notableFor | ruling parts of Holstein without leaving legitimate heirs ⓘ |
| partitionOf | Duchies of Schleswig and Holstein NERFINISHED ⓘ |
| placeOfBirth | Haderslev NERFINISHED ⓘ |
| placeOfDeath | Haderslev NERFINISHED ⓘ |
| positionHeld | ruler of parts of the duchy of Holstein ⓘ |
| religion | Lutheranism ⓘ |
| residence |
Haderslev
NERFINISHED
ⓘ
Holstein NERFINISHED ⓘ |
| ruledTerritory |
Duchy of Holstein
NERFINISHED
ⓘ
Holstein-Haderslev NERFINISHED ⓘ |
| sexOrGender | male ⓘ |
| sibling | Christian III of Denmark NERFINISHED ⓘ |
| titleHeldFrom | 1544 ⓘ |
| titleHeldUntil | 1580 ⓘ |
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: John the Elder, Duke of Holstein-Haderslev Description of subject: John the Elder, Duke of Holstein-Haderslev, was a 16th-century Danish-German nobleman of the House of Oldenburg who ruled parts of the duchy of Holstein without leaving legitimate heirs.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.