Bertha of Brittany
E921427
Bertha of Brittany was a medieval noblewoman and duchess consort of Brittany, remembered as a prominent member of the House of Cornouaille and mother of several Breton dukes.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Agnes of Cornouaille | 1 |
| Bertha of Brittany canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11362113 — 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: Bertha of Brittany Context triple: [House of Cornouaille, notableMember, Bertha of Brittany]
-
A.
Eleanor, Fair Maid of Brittany
Eleanor, Fair Maid of Brittany was a high-born Anglo-Norman noblewoman and long-imprisoned Plantagenet princess whose claim to the English throne made her a significant, though politically sidelined, figure in early 13th-century dynastic struggles.
-
B.
Blanche of Brittany
Blanche of Brittany was a 13th-century French noblewoman of the ducal house of Brittany, notable for her Plantagenet royal connections through her mother Beatrice of England.
-
C.
Matilda of Brittany
Matilda of Brittany was a 12th–13th century noblewoman, the daughter of Geoffrey II, Duke of Brittany, and a granddaughter of King Henry II of England, placing her within the Angevin royal dynasty.
-
D.
Elaine of Corbenic
Elaine of Corbenic is a figure in Arthurian legend best known as the Grail Maiden and the mother of the pure knight Sir Galahad.
-
E.
Judith of Brittany
Judith of Brittany was a 10th–11th century Breton noblewoman and duchess consort of Normandy, notable as the wife of Richard II of Normandy and mother of Robert I, Duke of Normandy.
- 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: Bertha of Brittany Target entity description: Bertha of Brittany was a medieval noblewoman and duchess consort of Brittany, remembered as a prominent member of the House of Cornouaille and mother of several Breton dukes.
-
A.
Eleanor, Fair Maid of Brittany
Eleanor, Fair Maid of Brittany was a high-born Anglo-Norman noblewoman and long-imprisoned Plantagenet princess whose claim to the English throne made her a significant, though politically sidelined, figure in early 13th-century dynastic struggles.
-
B.
Blanche of Brittany
Blanche of Brittany was a 13th-century French noblewoman of the ducal house of Brittany, notable for her Plantagenet royal connections through her mother Beatrice of England.
-
C.
Matilda of Brittany
Matilda of Brittany was a 12th–13th century noblewoman, the daughter of Geoffrey II, Duke of Brittany, and a granddaughter of King Henry II of England, placing her within the Angevin royal dynasty.
-
D.
Elaine of Corbenic
Elaine of Corbenic is a figure in Arthurian legend best known as the Grail Maiden and the mother of the pure knight Sir Galahad.
-
E.
Judith of Brittany
Judith of Brittany was a 10th–11th century Breton noblewoman and duchess consort of Normandy, notable as the wife of Richard II of Normandy and mother of Robert I, Duke of Normandy.
- F. None of above. chosen
Statements (27)
| Predicate | Object |
|---|---|
| instanceOf |
duchess consort
ⓘ
medieval person ⓘ noblewoman ⓘ |
| chronologicalContext | High Middle Ages ⓘ |
| countryOfCitizenship | Duchy of Brittany ⓘ |
| ethnicGroup | Breton people ⓘ |
| floruit | 12th century ⓘ |
| genre | medieval nobility ⓘ |
| languageOfWorkOrName |
Breton
ⓘ
Latin ⓘ |
| memberOf | House of Cornouaille ⓘ |
| motherOf |
Conan III, Duke of Brittany
ⓘ
Hawise of Brittany ⓘ
linked to:
Hawise, Duchess of Brittany
Unnamed children of Alan, Duke of Brittany ⓘ |
| nobleFamily | House of Cornouaille ⓘ |
| nobleRank | duchess ⓘ |
| notableFor |
being Duchess consort of Brittany
ⓘ
being mother of Breton dukes ⓘ |
| partOf | Breton high nobility ⓘ |
| placeOfActivity | Brittany ⓘ |
| positionHeld | Duchess consort of Brittany ⓘ |
| region | Brittany ⓘ |
| religion |
Catholicism
ⓘ
linked to:
Roman Catholicism
|
| residence | Brittany ⓘ |
| sexOrGender | female ⓘ |
| spouse |
Alan, Duke of Brittany
ⓘ
linked to:
Alan II, Duke of Brittany
|
| title | Duchess consort 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: Bertha of Brittany Description of subject: Bertha of Brittany was a medieval noblewoman and duchess consort of Brittany, remembered as a prominent member of the House of Cornouaille and mother of several Breton dukes.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Bertha of Brittany