Mieszko II Lambert
E466086
Mieszko II Lambert was an early 11th-century ruler from the Piast dynasty who reigned as King of Poland and faced significant internal strife and foreign invasions that weakened the young Polish state.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Mieszko II Lambert canonical | 16 |
| Mieszko II | 1 |
| Mieszko II of Poland | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4727837 — 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: Mieszko II Lambert Context triple: [King of Poland, positionHeldBy, Mieszko II Lambert]
-
A.
Bolesław II of Masovia
Bolesław II of Masovia was a 13th-century Polish Piast duke who ruled parts of the Masovian region and played a significant role in the fragmented politics of medieval Poland.
-
B.
Bolesław III Wrymouth
Bolesław III Wrymouth was a medieval Polish duke who significantly expanded and consolidated the Polish state but also initiated its later fragmentation through his testament dividing the realm among his sons.
-
C.
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.
-
D.
Bolesław
Bolesław is a masculine Slavic given name, particularly common in Poland, historically borne by several notable rulers and political figures.
-
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: Mieszko II Lambert Target entity description: Mieszko II Lambert was an early 11th-century ruler from the Piast dynasty who reigned as King of Poland and faced significant internal strife and foreign invasions that weakened the young Polish state.
-
A.
Bolesław II of Masovia
Bolesław II of Masovia was a 13th-century Polish Piast duke who ruled parts of the Masovian region and played a significant role in the fragmented politics of medieval Poland.
-
B.
Bolesław III Wrymouth
Bolesław III Wrymouth was a medieval Polish duke who significantly expanded and consolidated the Polish state but also initiated its later fragmentation through his testament dividing the realm among his sons.
-
C.
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.
-
D.
Bolesław
Bolesław is a masculine Slavic given name, particularly common in Poland, historically borne by several notable rulers and political figures.
-
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 (49)
| Predicate | Object |
|---|---|
| instanceOf |
King of Poland
ⓘ
Piast dynasty monarch ⓘ human ⓘ |
| alsoKnownAs |
Mieszko II
ⓘ
linked to:
Mieszko II Lambert
Mieszko II of Poland ⓘ
linked to:
Mieszko II Lambert
|
| burialPlace |
Cathedral Basilica of St. Peter and St. Paul, Poznań
ⓘ
linked to:
Poznań Cathedral
|
| child |
Casimir I the Restorer
ⓘ
Gertrude of Poland ⓘ |
| conflict |
conflicts with Kievan Rus
ⓘ
internal dynastic struggles with brothers Bezprym and Otto ⓘ wars with Holy Roman Emperor Conrad II ⓘ |
| countryOfCitizenship | Poland ⓘ |
| dateOfBirth | circa 990 ⓘ |
| dateOfDeath | 10 May 1034 ⓘ |
| endTime |
1031 (reign as King of Poland)
ⓘ
1034 (reign as Duke of Poland) ⓘ |
| era | early 11th century ⓘ |
| father | Bolesław I the Brave ⓘ |
| givenName | Mieszko ⓘ |
| house | Piast dynasty ⓘ |
| memberOfDynasty | Piast dynasty ⓘ |
| middleName | Lambert ⓘ |
| mother | Emnilda of Lusatia ⓘ |
| nativeLanguage | Polish ⓘ |
| notableCharacteristic | well-educated for his time ⓘ |
| notableEvent |
coronation as King of Poland in 1025
ⓘ
division of Polish realm after 1031 crisis ⓘ invasion by Kievan Rus in 1031 ⓘ invasions by Holy Roman Empire in 1031 ⓘ loss of Lusatia and Milsko ⓘ temporary exile in Bohemia ⓘ |
| notableWork | promotion of Latin literacy at his court ⓘ |
| occupation | monarch ⓘ |
| placeOfBirth | Poland ⓘ |
| placeOfDeath | Poznań ⓘ |
| positionHeld |
Duke of Poland
ⓘ
King of Poland ⓘ |
| predecessor | Bolesław I the Brave ⓘ |
| religion | Roman Catholicism ⓘ |
| residence |
Gniezno
ⓘ
Poznań ⓘ |
| sexOrGender | male ⓘ |
| significantImpact |
loss of royal title for his successors until 1076
ⓘ
weakening of early Polish state ⓘ |
| spouse | Richeza of Lotharingia ⓘ |
| startTime |
1025 (reign as King of Poland)
ⓘ
1032 (reign as Duke of Poland) ⓘ |
| successor |
Bezprym
ⓘ
Casimir I the Restorer ⓘ |
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: Mieszko II Lambert Description of subject: Mieszko II Lambert was an early 11th-century ruler from the Piast dynasty who reigned as King of Poland and faced significant internal strife and foreign invasions that weakened the young Polish state.
Referenced by (18)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mieszko II Lambert
linked to: Mieszko II Lambert
subject linked to:
the Restorer
subject linked to:
the Restorer