Mathilda Coster Mortimer
E633523
Mathilda Coster Mortimer was an American-born socialite who became a Scottish duchess through her marriage into the Campbell family, holders of the Dukedom of Argyll.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mathilda Coster Mortimer canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T6977839 — 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: Mathilda Coster Mortimer Context triple: [Ian Campbell, 11th Duke of Argyll, spouse, Mathilda Coster Mortimer]
-
A.
Maud Mortimer
Maud Mortimer was a medieval English noblewoman of the powerful Mortimer family, known primarily as the daughter of Roger Mortimer, 1st Earl of March.
-
B.
Beatrice Mortimer
Beatrice Mortimer was a 14th-century English noblewoman, daughter of the powerful Roger Mortimer, 1st Earl of March, and a member of the influential Mortimer family during the reign of Edward II and Edward III.
-
C.
Gertrude Vernon
Gertrude Vernon, better known as Lady Agnew of Lochnaw, is chiefly remembered as the elegant sitter in John Singer Sargent’s famous 1892 portrait that bears her title.
-
D.
Agnes Mortimer
Agnes Mortimer was a 14th-century English noblewoman of the powerful Mortimer family, notable for her dynastic connections within the medieval English aristocracy.
-
E.
Louise Mortimer
Louise Mortimer was the mother of French Socialist politician and former Prime Minister Laurent Fabius.
- 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: Mathilda Coster Mortimer Target entity description: Mathilda Coster Mortimer was an American-born socialite who became a Scottish duchess through her marriage into the Campbell family, holders of the Dukedom of Argyll.
-
A.
Maud Mortimer
Maud Mortimer was a medieval English noblewoman of the powerful Mortimer family, known primarily as the daughter of Roger Mortimer, 1st Earl of March.
-
B.
Beatrice Mortimer
Beatrice Mortimer was a 14th-century English noblewoman, daughter of the powerful Roger Mortimer, 1st Earl of March, and a member of the influential Mortimer family during the reign of Edward II and Edward III.
-
C.
Gertrude Vernon
Gertrude Vernon, better known as Lady Agnew of Lochnaw, is chiefly remembered as the elegant sitter in John Singer Sargent’s famous 1892 portrait that bears her title.
-
D.
Agnes Mortimer
Agnes Mortimer was a 14th-century English noblewoman of the powerful Mortimer family, notable for her dynastic connections within the medieval English aristocracy.
-
E.
Louise Mortimer
Louise Mortimer was the mother of French Socialist politician and former Prime Minister Laurent Fabius.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
American socialite
ⓘ
duchess ⓘ socialite ⓘ |
| associatedWithTitle | Dukedom of Argyll ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| ethnicOrigin | American ⓘ |
| familyConnection |
Campbell, Dukes of Argyll
ⓘ
linked to:
Campbell Earls of Argyll
|
| gender | female ⓘ |
| languageSpoken | English ⓘ |
| lifeEvent | became Duchess of Argyll through marriage ⓘ |
| marriedInto | Campbell family ⓘ |
| nationalityAtBirth | American ⓘ |
| nobleFamilyByMarriage | Campbell family ⓘ |
| notableFor | marriage into the Campbell family ⓘ |
| notableRole | American-born duchess in the British aristocracy ⓘ |
| partOf | Scottish peerage (by marriage) ⓘ |
| placeOfBirth | United States of America ⓘ |
| positionHeld | Duchess consort of Argyll ⓘ |
| residence | Scotland ⓘ |
| socialStatus |
aristocracy
ⓘ
nobility ⓘ |
| sphereOfActivity | high society ⓘ |
| spouse | member of the Campbell family ⓘ |
| title |
Duchess of Argyll
ⓘ
linked to:
Margaret Campbell, Duchess of Argyll
|
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: Mathilda Coster Mortimer Description of subject: Mathilda Coster Mortimer was an American-born socialite who became a Scottish duchess through her marriage into the Campbell family, holders of the Dukedom of Argyll.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.