Prince Arthur, Duke of Brittany
E147066
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Arthur I, Duke of Brittany | 3 |
| Arthur of Brittany (son of Peter I) | 1 |
| Prince Arthur | 1 |
| Prince Arthur, Duke of Brittany canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1030269 — 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: Prince Arthur, Duke of Brittany Context triple: [Worcester Cathedral, burialPlaceOf, Prince Arthur, Duke of Brittany]
-
A.
Duke of Brittany
The Duke of Brittany was the sovereign or semi-sovereign ruler of the historic region of Brittany in northwestern France, holding a ducal title central to the area's medieval political and cultural identity.
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B.
Geoffrey II, Duke of Brittany
Geoffrey II, Duke of Brittany was a 12th-century French nobleman, son of Henry II of England and brother of Richard the Lionheart, who ruled Brittany through his marriage to Constance and died young in a tournament accident.
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C.
Richard, 1st Earl of Cornwall
Richard, 1st Earl of Cornwall was a 13th-century English prince, wealthy magnate, and elected King of the Romans who played a significant role in European politics during the reigns of his brother Henry III and beyond.
-
D.
Duke of Gascony
The Duke of Gascony was a medieval noble title held by the ruler of the historical region of Gascony in southwestern France, often associated with early feudal lords who later became linked to the dukes of Aquitaine.
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E.
Duke of Penthièvre
The Duke of Penthièvre was a prominent French noble title of the Ancien Régime, most famously held by members of the Bourbon family closely connected to the royal court.
- 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: Prince Arthur, Duke of Brittany Target entity description: 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.
-
A.
Duke of Brittany
The Duke of Brittany was the sovereign or semi-sovereign ruler of the historic region of Brittany in northwestern France, holding a ducal title central to the area's medieval political and cultural identity.
-
B.
Geoffrey II, Duke of Brittany
Geoffrey II, Duke of Brittany was a 12th-century French nobleman, son of Henry II of England and brother of Richard the Lionheart, who ruled Brittany through his marriage to Constance and died young in a tournament accident.
-
C.
Richard, 1st Earl of Cornwall
Richard, 1st Earl of Cornwall was a 13th-century English prince, wealthy magnate, and elected King of the Romans who played a significant role in European politics during the reigns of his brother Henry III and beyond.
-
D.
Duke of Gascony
The Duke of Gascony was a medieval noble title held by the ruler of the historical region of Gascony in southwestern France, often associated with early feudal lords who later became linked to the dukes of Aquitaine.
-
E.
Duke of Penthièvre
The Duke of Penthièvre was a prominent French noble title of the Ancien Régime, most famously held by members of the Bourbon family closely connected to the royal court.
- F. None of above. chosen
Statements (45)
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: Prince Arthur, Duke of Brittany Description of subject: 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.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Arthur of Brittany (son of Peter I)
this entity surface form:
Prince Arthur
this entity surface form:
Arthur I, Duke of Brittany
this entity surface form:
Arthur I, Duke of Brittany
this entity surface form:
Arthur I, Duke of Brittany