Arthur II, Duke of Brittany
E298744
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Arthur II, Duke of Brittany canonical | 11 |
How this entity was disambiguated
This entity first appeared as the object of triple T2457928 — 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: Arthur II, Duke of Brittany Context triple: [Duke of Brittany, officeHolder, Arthur II, Duke of Brittany]
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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.
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B.
John I, Duke of Brittany
John I, Duke of Brittany was a 13th-century Breton nobleman who ruled the Duchy of Brittany and played a significant role in the politics of medieval France.
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C.
John II, Duke of Brittany
John II, Duke of Brittany was a 13th-century French nobleman who ruled the Duchy of Brittany and played a significant role in the politics of the Capetian kingdom.
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D.
John V, Duke of Brittany
John V, Duke of Brittany was a 15th-century Breton ruler who consolidated ducal authority, navigated complex alliances during the Hundred Years’ War, and fostered relative stability and prosperity in his duchy.
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E.
John III, Duke of Brittany
John III, Duke of Brittany was a 14th-century Breton ruler whose childless reign and succession disputes helped trigger the Breton War of Succession.
- 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: Arthur II, Duke of Brittany Target entity description: 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.
-
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.
John I, Duke of Brittany
John I, Duke of Brittany was a 13th-century Breton nobleman who ruled the Duchy of Brittany and played a significant role in the politics of medieval France.
-
C.
John II, Duke of Brittany
John II, Duke of Brittany was a 13th-century French nobleman who ruled the Duchy of Brittany and played a significant role in the politics of the Capetian kingdom.
-
D.
John V, Duke of Brittany
John V, Duke of Brittany was a 15th-century Breton ruler who consolidated ducal authority, navigated complex alliances during the Hundred Years’ War, and fostered relative stability and prosperity in his duchy.
-
E.
John III, Duke of Brittany
John III, Duke of Brittany was a 14th-century Breton ruler whose childless reign and succession disputes helped trigger the Breton War of Succession.
- 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: Arthur II, Duke of Brittany Description of subject: 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.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.