Casimir I, Duke of Cieszyn
E1023738
Casimir I, Duke of Cieszyn was a 14th-century Silesian Piast duke who ruled the Duchy of Cieszyn and played a key role in the regional politics of Silesia and its relations with the Kingdom of Bohemia.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Casimir I, Duke of Cieszyn canonical | 2 |
| Casimir I of Cieszyn | 1 |
| Dux Cieszynski | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12863254 — 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: Casimir I, Duke of Cieszyn Context triple: [Teschen Piasts, notableMember, Casimir I, Duke of Cieszyn]
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A.
Casimir II, Duke of Cieszyn
Casimir II, Duke of Cieszyn, was a late 15th- and early 16th-century Silesian Piast prince known for his long rule over Cieszyn and his efforts to maintain the duchy’s autonomy amid growing Habsburg and Bohemian influence.
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B.
Bolesław I of Cieszyn
Bolesław I of Cieszyn was a late 13th–early 14th century Duke from the Silesian Piast dynasty who ruled the Duchy of Cieszyn in what is now southern Poland.
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C.
Bolesław II of Cieszyn
Bolesław II of Cieszyn was a 15th-century Duke from the Silesian Piast dynasty who ruled the Duchy of Cieszyn in what is now southern Poland.
-
D.
Frederick of Cieszyn
Frederick of Cieszyn was a 15th-century Silesian Piast duke who briefly ruled part of the Duchy of Teschen.
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E.
Casimir I of Kuyavia
Casimir I of Kuyavia was a 13th-century Piast duke who ruled parts of central Poland and was a prominent member of the Polish royal dynasty.
- 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: Casimir I, Duke of Cieszyn Target entity description: Casimir I, Duke of Cieszyn was a 14th-century Silesian Piast duke who ruled the Duchy of Cieszyn and played a key role in the regional politics of Silesia and its relations with the Kingdom of Bohemia.
-
A.
Casimir II, Duke of Cieszyn
Casimir II, Duke of Cieszyn, was a late 15th- and early 16th-century Silesian Piast prince known for his long rule over Cieszyn and his efforts to maintain the duchy’s autonomy amid growing Habsburg and Bohemian influence.
-
B.
Bolesław I of Cieszyn
Bolesław I of Cieszyn was a late 13th–early 14th century Duke from the Silesian Piast dynasty who ruled the Duchy of Cieszyn in what is now southern Poland.
-
C.
Bolesław II of Cieszyn
Bolesław II of Cieszyn was a 15th-century Duke from the Silesian Piast dynasty who ruled the Duchy of Cieszyn in what is now southern Poland.
-
D.
Frederick of Cieszyn
Frederick of Cieszyn was a 15th-century Silesian Piast duke who briefly ruled part of the Duchy of Teschen.
-
E.
Casimir I of Kuyavia
Casimir I of Kuyavia was a 13th-century Piast duke who ruled parts of central Poland and was a prominent member of the Polish royal dynasty.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Silesian Piast
ⓘ
duke ⓘ human ⓘ medieval ruler ⓘ |
| allegiance | Kingdom of Bohemia NERFINISHED ⓘ |
| centuryOfActivity | 14th century ⓘ |
| child |
Anna of Cieszyn
NERFINISHED
ⓘ
Boleslaus, Duke of Cieszyn NERFINISHED ⓘ Przemyslaus I Noszak NERFINISHED ⓘ Wenceslaus I, Duke of Cieszyn NERFINISHED ⓘ |
| continent | Europe ⓘ |
| countryOfCitizenship | Duchy of Cieszyn NERFINISHED ⓘ |
| culture | Silesian ⓘ |
| ethnicGroup | Poles ⓘ |
| father | Mieszko I, Duke of Cieszyn NERFINISHED ⓘ |
| floruit | 14th century ⓘ |
| givenName | Casimir NERFINISHED ⓘ |
| governmentForm | feudal monarchy ⓘ |
| historicalRegion | Silesia NERFINISHED ⓘ |
| influenced | relations between Silesian duchies and the Kingdom of Bohemia ⓘ |
| languageUsed |
Latin
ⓘ
Polish ⓘ |
| locatedInTheAdministrativeTerritorialEntity | Silesia NERFINISHED ⓘ |
| memberOfDynasty | Silesian Piasts NERFINISHED ⓘ |
| mother | Euphrosyne of Masovia NERFINISHED ⓘ |
| nobleFamily | Piast dynasty NERFINISHED ⓘ |
| nobleTitle | duke ⓘ |
| notableFor |
role in Silesian–Bohemian relations
ⓘ
rule over the Duchy of Cieszyn ⓘ |
| participatedIn | regional politics of Silesia ⓘ |
| partOf | Silesia NERFINISHED ⓘ |
| partOfHistoricalRegion | Lands of the Bohemian Crown NERFINISHED ⓘ |
| placeOfBirth | Cieszyn NERFINISHED ⓘ |
| placeOfDeath | Cieszyn NERFINISHED ⓘ |
| politicalAlignment | vassal of the Kingdom of Bohemia ⓘ |
| positionHeld | Duke of Cieszyn NERFINISHED ⓘ |
| predecessor | Mieszko I, Duke of Cieszyn NERFINISHED ⓘ |
| realm | Duchy of Cieszyn NERFINISHED ⓘ |
| region | Upper Silesia NERFINISHED ⓘ |
| religion | Roman Catholicism ⓘ |
| residence | Cieszyn NERFINISHED ⓘ |
| significantEvent | homage to the King of Bohemia ⓘ |
| spouse | Euphemia of Masovia NERFINISHED ⓘ |
| successor | Wenceslaus I, Duke of Cieszyn NERFINISHED ⓘ |
| territoryRuled |
Cieszyn Silesia
NERFINISHED
ⓘ
Duchy of Cieszyn NERFINISHED ⓘ |
| title | Duke of Cieszyn 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: Casimir I, Duke of Cieszyn Description of subject: Casimir I, Duke of Cieszyn was a 14th-century Silesian Piast duke who ruled the Duchy of Cieszyn and played a key role in the regional politics of Silesia and its relations with the Kingdom of Bohemia.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Casimir I of Cieszyn
this entity surface form:
Dux Cieszynski