Richard le Breton
E626150
Richard le Breton was a 12th-century knight of King Henry II of England, best known as one of the four assassins who killed Archbishop Thomas Becket in Canterbury Cathedral in 1170.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Richard of Poitou | 2 |
| Richard le Breton canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6253912 — 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: Richard le Breton Context triple: [Murder of Thomas Becket, hasPerpetrator, Richard le Breton]
-
A.
Prince Arthur, Duke of Brittany
Prince Arthur, Duke of Brittany was the nephew of King John of England and a Plantagenet prince whose disputed claim to the English throne and mysterious early death made him a notable figure in medieval English history.
-
B.
Guillaume Cale
Guillaume Cale was a 14th-century French peasant leader who headed the Jacquerie uprising against the nobility during the Hundred Years' War.
-
C.
Arthur II, Duke of Brittany
Arthur II, Duke of Brittany was a late 13th- and early 14th-century Breton ruler from the House of Dreux who governed the Duchy of Brittany under French suzerainty and navigated complex feudal and dynastic politics of medieval France.
-
D.
Baldwin of Blois
Baldwin of Blois was a 12th-century French nobleman, son of King Stephen of England and Matilda I of Boulogne, who held the title of Count of Blois.
-
E.
Charles of Blois
Charles of Blois was a 14th-century French nobleman and claimant to the Duchy of Brittany, known for his role in the Breton War of Succession and later venerated as a saintly figure.
- 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: Richard le Breton Target entity description: Richard le Breton was a 12th-century knight of King Henry II of England, best known as one of the four assassins who killed Archbishop Thomas Becket in Canterbury Cathedral in 1170.
-
A.
Prince Arthur, Duke of Brittany
Prince Arthur, Duke of Brittany was the nephew of King John of England and a Plantagenet prince whose disputed claim to the English throne and mysterious early death made him a notable figure in medieval English history.
-
B.
Guillaume Cale
Guillaume Cale was a 14th-century French peasant leader who headed the Jacquerie uprising against the nobility during the Hundred Years' War.
-
C.
Arthur II, Duke of Brittany
Arthur II, Duke of Brittany was a late 13th- and early 14th-century Breton ruler from the House of Dreux who governed the Duchy of Brittany under French suzerainty and navigated complex feudal and dynastic politics of medieval France.
-
D.
Baldwin of Blois
Baldwin of Blois was a 12th-century French nobleman, son of King Stephen of England and Matilda I of Boulogne, who held the title of Count of Blois.
-
E.
Charles of Blois
Charles of Blois was a 14th-century French nobleman and claimant to the Duchy of Brittany, known for his role in the Breton War of Succession and later venerated as a saintly figure.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
12th-century person
ⓘ
English knight ⓘ |
| allegiance | Henry II of England NERFINISHED ⓘ |
| alsoKnownAs |
Ricardus de Brito
NERFINISHED
ⓘ
Richard Brito NERFINISHED ⓘ |
| associatedWith | Canterbury NERFINISHED ⓘ |
| category |
12th-century English knights
ⓘ
People associated with Thomas Becket ⓘ |
| centuryOfActivity | 12th century ⓘ |
| co-perpetrator |
Hugh de Morville
NERFINISHED
ⓘ
Reginald FitzUrse NERFINISHED ⓘ William de Tracy NERFINISHED ⓘ |
| country | Kingdom of England ⓘ |
| dateOfEvent | 1170 ⓘ |
| employer | Henry II of England NERFINISHED ⓘ |
| era | High Middle Ages ⓘ |
| historicalEventLocation | Canterbury, Kent NERFINISHED ⓘ |
| historicalRole | assassin of an archbishop ⓘ |
| languageOfName | Norman French NERFINISHED ⓘ |
| monarchDuringActivity | Henry II of England NERFINISHED ⓘ |
| nobleStatus | knight ⓘ |
| notableFor | participation in the assassination of Thomas Becket ⓘ |
| occupation | knight ⓘ |
| participantIn | assassination of Thomas Becket NERFINISHED ⓘ |
| placeOfDeathOfVictim | Canterbury Cathedral NERFINISHED ⓘ |
| regionOfActivity | England NERFINISHED ⓘ |
| religion | Christianity ⓘ |
| victim | Thomas Becket NERFINISHED ⓘ |
| victimTitle | Archbishop of Canterbury 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: Richard le Breton Description of subject: Richard le Breton was a 12th-century knight of King Henry II of England, best known as one of the four assassins who killed Archbishop Thomas Becket in Canterbury Cathedral in 1170.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Richard of Poitou
this entity surface form:
Richard of Poitou