Waldemar, Margrave of Brandenburg
E429865
Waldemar, Margrave of Brandenburg, was a prominent early 14th-century German prince who ruled the Margraviate of Brandenburg and became a legendary figure in regional medieval history.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Waldemar, Margrave of Brandenburg canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4221531 — 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: Waldemar, Margrave of Brandenburg Context triple: [Ascanian dynasty, notableMember, Waldemar, Margrave of Brandenburg]
-
A.
Otto III, Margrave of Brandenburg
Otto III, Margrave of Brandenburg, was a 13th-century German prince of the Ascanian dynasty who co-ruled the Margraviate of Brandenburg and played a key role in its territorial consolidation and regional influence.
-
B.
John I, Margrave of Brandenburg
John I, Margrave of Brandenburg, was a 13th-century German prince who significantly expanded and consolidated Brandenburg’s territories, helping to establish it as a major principality within the Holy Roman Empire.
-
C.
Margrave of Brandenburg
The Margrave of Brandenburg was a powerful medieval German prince who ruled the March of Brandenburg and held significant influence within the Holy Roman Empire.
-
D.
William, Margrave of Brandenburg-Schwedt
William, Margrave of Brandenburg-Schwedt was an 18th-century Prussian prince and military commander from a cadet branch of the Hohenzollern dynasty.
-
E.
John of Brandenburg-Küstrin
John of Brandenburg-Küstrin was a 16th-century German margrave who ruled the Neumark region of Brandenburg and played a notable role in the political and religious affairs of the Holy Roman Empire during the Reformation.
- 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: Waldemar, Margrave of Brandenburg Target entity description: Waldemar, Margrave of Brandenburg, was a prominent early 14th-century German prince who ruled the Margraviate of Brandenburg and became a legendary figure in regional medieval history.
-
A.
Otto III, Margrave of Brandenburg
Otto III, Margrave of Brandenburg, was a 13th-century German prince of the Ascanian dynasty who co-ruled the Margraviate of Brandenburg and played a key role in its territorial consolidation and regional influence.
-
B.
John I, Margrave of Brandenburg
John I, Margrave of Brandenburg, was a 13th-century German prince who significantly expanded and consolidated Brandenburg’s territories, helping to establish it as a major principality within the Holy Roman Empire.
-
C.
Margrave of Brandenburg
The Margrave of Brandenburg was a powerful medieval German prince who ruled the March of Brandenburg and held significant influence within the Holy Roman Empire.
-
D.
William, Margrave of Brandenburg-Schwedt
William, Margrave of Brandenburg-Schwedt was an 18th-century Prussian prince and military commander from a cadet branch of the Hohenzollern dynasty.
-
E.
John of Brandenburg-Küstrin
John of Brandenburg-Küstrin was a 16th-century German margrave who ruled the Neumark region of Brandenburg and played a notable role in the political and religious affairs of the Holy Roman Empire during the Reformation.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
German prince
ⓘ
human ⓘ margrave ⓘ medieval noble ⓘ |
| activeInCentury | 14th century ⓘ |
| associatedWithLegend | False Waldemar NERFINISHED ⓘ |
| birthDate | c. 1280 ⓘ |
| burialPlace | Brandenburg Cathedral (attributed) NERFINISHED ⓘ |
| countryOfOrigin | Holy Roman Empire ⓘ |
| deathDate | 1319-08-14 ⓘ |
| deathPlace | Bärwalde NERFINISHED ⓘ |
| era | Middle Ages ⓘ |
| ethnicity | German ⓘ |
| father | Conrad, Margrave of Brandenburg-Stendal NERFINISHED ⓘ |
| governedFrom | Brandenburg NERFINISHED ⓘ |
| heldElectoralDignity | yes ⓘ |
| historicalReputation | energetic and ambitious ruler ⓘ |
| languageOfUse | Middle High German ⓘ |
| legacy | became a legendary figure in Brandenburg regional history ⓘ |
| mother | Constance of Greater Poland NERFINISHED ⓘ |
| name | Waldemar NERFINISHED ⓘ |
| nobleFamily | House of Ascania NERFINISHED ⓘ |
| nobleRank | prince-elector ⓘ |
| notableFor |
conflicts with neighboring principalities
ⓘ
role in imperial politics of the Holy Roman Empire ⓘ strengthening Ascanian rule in Brandenburg ⓘ |
| participatedIn |
power struggles within the Holy Roman Empire
ⓘ
territorial disputes in Pomerania ⓘ |
| positionHeld |
Elector of Brandenburg
NERFINISHED
ⓘ
Margrave of Brandenburg-Stendal NERFINISHED ⓘ |
| predecessor | Herman, Margrave of Brandenburg-Salzwedel NERFINISHED ⓘ |
| reignEnd | 1319 ⓘ |
| reignStart | 1308 ⓘ |
| religion | Roman Catholicism ⓘ |
| ruledTerritory |
Brandenburg-Stendal
NERFINISHED
ⓘ
Margraviate of Brandenburg NERFINISHED ⓘ |
| spouse | Agnes of Brandenburg NERFINISHED ⓘ |
| style | Margrave and Elector of Brandenburg ⓘ |
| succeededBy | Henry II, Margrave of Brandenburg-Stendal NERFINISHED ⓘ |
| successorState | Brandenburg under Wittelsbach rule ⓘ |
| title | Margrave of Brandenburg 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: Waldemar, Margrave of Brandenburg Description of subject: Waldemar, Margrave of Brandenburg, was a prominent early 14th-century German prince who ruled the Margraviate of Brandenburg and became a legendary figure in regional medieval history.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.