Boleslaus I the Cruel
E626175
Boleslaus I the Cruel was a 10th-century Duke of Bohemia known for consolidating and expanding Přemyslid power, including through the notorious murder of his brother Saint Wenceslaus.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Boleslaus the Cruel | 2 |
| Boleslaus I the Cruel canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6859017 — 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: Boleslaus I the Cruel Context triple: [Přemyslid dynasty, notableRuler, Boleslaus I the Cruel]
-
A.
Bolesław II the Bald
Bolesław II the Bald was a 13th-century Duke of Silesia from the Piast dynasty who ruled parts of the fragmented Polish realm following the death of his brother Henry II the Pious.
-
B.
Bolesław I the Tall
Bolesław I the Tall was a 12th-century Duke of Wrocław and Silesia from the Piast dynasty, known for his role in the fragmentation and political reshaping of medieval Poland.
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C.
Bolesław I the Brave
Bolesław I the Brave was the first crowned king of Poland and a pivotal early medieval ruler who expanded and consolidated the Polish state.
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D.
Bořivoj I, Duke of Bohemia
Bořivoj I, Duke of Bohemia, was the first historically documented ruler of Bohemia and an early promoter of Christianity in the region during the late 9th century.
-
E.
Bolesław
Bolesław is a masculine Slavic given name, particularly common in Poland, historically borne by several notable rulers and political figures.
- 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: Boleslaus I the Cruel Target entity description: Boleslaus I the Cruel was a 10th-century Duke of Bohemia known for consolidating and expanding Přemyslid power, including through the notorious murder of his brother Saint Wenceslaus.
-
A.
Bolesław II the Bald
Bolesław II the Bald was a 13th-century Duke of Silesia from the Piast dynasty who ruled parts of the fragmented Polish realm following the death of his brother Henry II the Pious.
-
B.
Bolesław I the Tall
Bolesław I the Tall was a 12th-century Duke of Wrocław and Silesia from the Piast dynasty, known for his role in the fragmentation and political reshaping of medieval Poland.
-
C.
Bolesław I the Brave
Bolesław I the Brave was the first crowned king of Poland and a pivotal early medieval ruler who expanded and consolidated the Polish state.
-
D.
Bořivoj I, Duke of Bohemia
Bořivoj I, Duke of Bohemia, was the first historically documented ruler of Bohemia and an early promoter of Christianity in the region during the late 9th century.
-
E.
Bolesław
Bolesław is a masculine Slavic given name, particularly common in Poland, historically borne by several notable rulers and political figures.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Duke of Bohemia
ⓘ
medieval ruler ⓘ member of the Přemyslid dynasty ⓘ |
| ally | Otto I, Holy Roman Emperor NERFINISHED ⓘ |
| alsoKnownAs |
Boleslaus I of Bohemia
NERFINISHED
ⓘ
Boleslav I NERFINISHED ⓘ |
| capital | Prague NERFINISHED ⓘ |
| causeOfBrotherDeath | assassination of Saint Wenceslaus at Stará Boleslav ⓘ |
| child |
Boleslaus II, Duke of Bohemia
NERFINISHED
ⓘ
Dobrawa of Bohemia NERFINISHED ⓘ Strachkvas NERFINISHED ⓘ |
| conflict |
Battle of Lechfeld (as ally of Otto I)
NERFINISHED
ⓘ
wars against the Holy Roman Empire ⓘ |
| countryOfCitizenship | Duchy of Bohemia NERFINISHED ⓘ |
| dateOfBirth | c. 907 ⓘ |
| dateOfDeath | 972 ⓘ |
| epithet |
the Cruel
NERFINISHED
ⓘ
the Wicked NERFINISHED ⓘ |
| era | 10th century ⓘ |
| expandedTerritory |
Lesser Poland
NERFINISHED
ⓘ
Moravia NERFINISHED ⓘ Silesia NERFINISHED ⓘ |
| father | Vratislaus I, Duke of Bohemia NERFINISHED ⓘ |
| founded | Bohemian denar minting ⓘ |
| givenName | Boleslaus NERFINISHED ⓘ |
| historicalPeriod | Early Middle Ages NERFINISHED ⓘ |
| implemented | tribute system over Polish tribes ⓘ |
| introduced | regular coinage in Bohemia ⓘ |
| languageOfName | Latin ⓘ |
| mother | Drahomíra of Stodor NERFINISHED ⓘ |
| nativeLanguage | Old Czech ⓘ |
| nobleFamily | Přemyslid dynasty NERFINISHED ⓘ |
| notableFor |
consolidation of Přemyslid power in Bohemia
ⓘ
expansion of the Duchy of Bohemia ⓘ ordering the murder of his brother Saint Wenceslaus ⓘ |
| placeOfBirth | Bohemia NERFINISHED ⓘ |
| placeOfDeath | Bohemia NERFINISHED ⓘ |
| positionHeld | Duke of Bohemia NERFINISHED ⓘ |
| predecessor | Wenceslaus I, Duke of Bohemia NERFINISHED ⓘ |
| regionRuled | Bohemia NERFINISHED ⓘ |
| reignEnd | 972 ⓘ |
| reignStart | c. 935 ⓘ |
| religion | Christianity ⓘ |
| sexOrGender | male ⓘ |
| sibling |
Saint Wenceslaus
NERFINISHED
ⓘ
Wenceslaus I, Duke of Bohemia NERFINISHED ⓘ |
| spouse | Biagota NERFINISHED ⓘ |
| successor | Boleslaus II, Duke of Bohemia 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: Boleslaus I the Cruel Description of subject: Boleslaus I the Cruel was a 10th-century Duke of Bohemia known for consolidating and expanding Přemyslid power, including through the notorious murder of his brother Saint Wenceslaus.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Boleslaus the Cruel
this entity surface form:
Boleslaus the Cruel