Peter of Dreux
E471332
Peter of Dreux was a prominent 13th-century French nobleman and military leader from the Capetian House of Dreux, known especially for his role as Duke of Brittany by marriage.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Peter of France | 2 |
| Peter of Dreux canonical | 1 |
| Pierre de Dreux | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4604774 — 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: Peter of Dreux Context triple: [Count of Dreux, notableHolder, Peter of Dreux]
-
A.
Robert I of Dreux
Robert I of Dreux was a 12th-century French nobleman and son of King Louis VI of France, who became the first holder of the County of Dreux and founded the cadet branch of the Capetian dynasty known as the House of Dreux.
-
B.
Robert II of Dreux
Robert II of Dreux was a 12th–13th century French nobleman and crusader from the Capetian royal house who played a significant role in the politics and warfare of the Île-de-France region.
-
C.
Robert IV of Dreux
Robert IV of Dreux was a 13th-century French nobleman from the Capetian House of Dreux who held the title of Count of Dreux and was involved in the political affairs of medieval France.
-
D.
Geoffrey V, Count of Anjou
Geoffrey V, Count of Anjou was a 12th-century French nobleman and crusader whose marriage to Empress Matilda founded the Angevin dynasty that would rule England and much of western France.
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E.
Hugh of Vermandois
Hugh of Vermandois was a French nobleman and younger brother of King Philip I of France who served as one of the prominent princely leaders during the First Crusade.
- 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: Peter of Dreux Target entity description: Peter of Dreux was a prominent 13th-century French nobleman and military leader from the Capetian House of Dreux, known especially for his role as Duke of Brittany by marriage.
-
A.
Robert I of Dreux
Robert I of Dreux was a 12th-century French nobleman and son of King Louis VI of France, who became the first holder of the County of Dreux and founded the cadet branch of the Capetian dynasty known as the House of Dreux.
-
B.
Robert II of Dreux
Robert II of Dreux was a 12th–13th century French nobleman and crusader from the Capetian royal house who played a significant role in the politics and warfare of the Île-de-France region.
-
C.
Robert IV of Dreux
Robert IV of Dreux was a 13th-century French nobleman from the Capetian House of Dreux who held the title of Count of Dreux and was involved in the political affairs of medieval France.
-
D.
Geoffrey V, Count of Anjou
Geoffrey V, Count of Anjou was a 12th-century French nobleman and crusader whose marriage to Empress Matilda founded the Angevin dynasty that would rule England and much of western France.
-
E.
Hugh of Vermandois
Hugh of Vermandois was a French nobleman and younger brother of King Philip I of France who served as one of the prominent princely leaders during the First Crusade.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
Count of Penthièvre
ⓘ
Count of Richmond ⓘ Duke of Brittany ⓘ human ⓘ military leader ⓘ nobleman ⓘ |
| allegiance | French Crown NERFINISHED ⓘ |
| associatedPlace |
County of Dreux
NERFINISHED
ⓘ
County of Penthièvre NERFINISHED ⓘ Duchy of Brittany NERFINISHED ⓘ Earldom of Richmond NERFINISHED ⓘ |
| birthDate | c.1187 ⓘ |
| causeOfDeath | drowned ⓘ |
| child |
Arthur of Brittany (died young)
NERFINISHED
ⓘ
John I, Duke of Brittany NERFINISHED ⓘ Yolande of Brittany NERFINISHED ⓘ |
| conflict |
Albigensian Crusade (as royal supporter)
NERFINISHED
ⓘ
Anglo-French conflicts under Philip II and Louis VIII ⓘ Breton War of Succession (early phases of Breton internal conflicts) NERFINISHED ⓘ |
| countryOfCitizenship | Kingdom of France NERFINISHED ⓘ |
| deathDate | 1250-05-30 ⓘ |
| deathPlace | Sea of Marmara NERFINISHED ⓘ |
| diedOnCampaign | Seventh Crusade NERFINISHED ⓘ |
| father | Robert II, Count of Dreux NERFINISHED ⓘ |
| heldTitleByMarriage | Duke of Brittany NERFINISHED ⓘ |
| heldTitleFrom | King of France NERFINISHED ⓘ |
| language | Old French NERFINISHED ⓘ |
| memberOfDynasty | Capetian House of Dreux NERFINISHED ⓘ |
| mother | Yolande de Coucy NERFINISHED ⓘ |
| name |
Peter Mauclerc
NERFINISHED
ⓘ
Peter of Dreux NERFINISHED ⓘ Pierre de Dreux NERFINISHED ⓘ |
| nickname | Mauclerc NERFINISHED ⓘ |
| nicknameMeaning | “bad cleric” or “renegade cleric” ⓘ |
| nobleFamily | House of Dreux NERFINISHED ⓘ |
| notableFor |
assertive and often harsh rule over Breton nobility
ⓘ
service to French kings Philip II, Louis VIII, and Louis IX ⓘ strengthening Capetian influence in Brittany ⓘ |
| participatedIn | Seventh Crusade NERFINISHED ⓘ |
| predecessor | Alix of Thouars (as ruling Duchess of Brittany) NERFINISHED ⓘ |
| reasonForNickname | originally destined for a clerical career but abandoned it for knighthood ⓘ |
| regencyEnd | 1221 (on Alix of Thouars’s death) ⓘ |
| regencyStart | 1213 (for his wife Alix and infant heirs) ⓘ |
| reignEnd | 1237 (formal ducal authority ceded to his son) ⓘ |
| reignStart | 1213 (as Duke of Brittany by marriage) ⓘ |
| religion | Roman Catholicism ⓘ |
| spouse |
Alix of Thouars
NERFINISHED
ⓘ
Nicole, daughter of Pierre de Mauclerc (disputed or lesser-known second marriage) ⓘ |
| successor | John I, Duke of Brittany NERFINISHED ⓘ |
| title |
Count of Penthièvre
NERFINISHED
ⓘ
Duke of Brittany NERFINISHED ⓘ Earl of Richmond NERFINISHED ⓘ Regent of Brittany ⓘ |
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: Peter of Dreux Description of subject: Peter of Dreux was a prominent 13th-century French nobleman and military leader from the Capetian House of Dreux, known especially for his role as Duke of Brittany by marriage.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Peter of France
this entity surface form:
Pierre de Dreux
this entity surface form:
Peter of France