Margaret Beaufort, Countess of Stafford
E910407
15th-century English noblewoman
Beaufort family member
English noblewoman
member of the English nobility
Margaret Beaufort, Countess of Stafford, was a 15th-century English noblewoman of the Beaufort family and the mother of Henry Stafford, 2nd Duke of Buckingham, who played a notable role in the politics of the Wars of the Roses.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Margaret Beaufort, Countess of Stafford canonical | 3 |
| Margaret Beaufort | 1 |
| Margaret Beaufort, Countess of Devon | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11195920 — 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: Margaret Beaufort, Countess of Stafford Context triple: [Henry Stafford, 2nd Duke of Buckingham, mother, Margaret Beaufort, Countess of Stafford]
-
A.
Margaret Beaufort
Margaret Beaufort was an influential English noblewoman and political strategist of the late 15th century, best known as the mother of King Henry VII and a key architect of the Tudor dynasty.
-
B.
Mary Beaufort
Mary Beaufort is a notable member of the historically significant Beaufort family, a prominent English noble lineage connected to the House of Lancaster.
-
C.
Elizabeth Grey, Countess Grey
Elizabeth Grey, Countess Grey, was a British aristocrat best known as the mother of Charles Grey, 2nd Earl Grey, the Whig prime minister after whom Earl Grey tea is named.
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D.
Margaret Neville
Margaret Neville was an English noblewoman of the late 14th and early 15th centuries, a member of the influential Neville family and the wife of Thomas Beaufort, Duke of Exeter.
-
E.
Margaret Stanley
Margaret Stanley was an English noblewoman of the late 15th and early 16th centuries, notable as a member of the influential Stanley family during the Tudor period.
- 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: Margaret Beaufort, Countess of Stafford Target entity description: Margaret Beaufort, Countess of Stafford, was a 15th-century English noblewoman of the Beaufort family and the mother of Henry Stafford, 2nd Duke of Buckingham, who played a notable role in the politics of the Wars of the Roses.
-
A.
Margaret Beaufort
Margaret Beaufort was an influential English noblewoman and political strategist of the late 15th century, best known as the mother of King Henry VII and a key architect of the Tudor dynasty.
-
B.
Mary Beaufort
Mary Beaufort is a notable member of the historically significant Beaufort family, a prominent English noble lineage connected to the House of Lancaster.
-
C.
Elizabeth Grey, Countess Grey
Elizabeth Grey, Countess Grey, was a British aristocrat best known as the mother of Charles Grey, 2nd Earl Grey, the Whig prime minister after whom Earl Grey tea is named.
-
D.
Margaret Neville
Margaret Neville was an English noblewoman of the late 14th and early 15th centuries, a member of the influential Neville family and the wife of Thomas Beaufort, Duke of Exeter.
-
E.
Margaret Stanley
Margaret Stanley was an English noblewoman of the late 15th and early 16th centuries, notable as a member of the influential Stanley family during the Tudor period.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
15th-century English noblewoman
ⓘ
Beaufort family member ⓘ English noblewoman ⓘ member of the English nobility ⓘ |
| allegiance | Lancastrian cause ⓘ |
| birthPlace | England ⓘ |
| child |
Anne Stafford
NERFINISHED
ⓘ
Catherine Stafford NERFINISHED ⓘ Elizabeth Stafford NERFINISHED ⓘ Henry Stafford, 2nd Duke of Buckingham NERFINISHED ⓘ Humphrey Stafford (son of Humphrey Stafford, 1st Duke of Buckingham) NERFINISHED ⓘ Mary Stafford NERFINISHED ⓘ |
| country | Kingdom of England ⓘ |
| deathPlace | England ⓘ |
| familyName | Beaufort NERFINISHED ⓘ |
| father | Edmund Beaufort, 2nd Duke of Somerset NERFINISHED ⓘ |
| floruit | 15th century ⓘ |
| givenName | Margaret ⓘ |
| grandfather | John Beaufort, 1st Earl of Somerset NERFINISHED ⓘ |
| greatGrandfather | John of Gaunt, 1st Duke of Lancaster NERFINISHED ⓘ |
| greatGreatGrandfather | Edward III of England NERFINISHED ⓘ |
| language | Middle English ⓘ |
| mother | Eleanor Beauchamp NERFINISHED ⓘ |
| motherOf | Henry Stafford, 2nd Duke of Buckingham NERFINISHED ⓘ |
| nobleFamily |
House of Beaufort
NERFINISHED
ⓘ
House of Lancaster NERFINISHED ⓘ |
| nobleRank | countess ⓘ |
| nobleTitle |
Countess of Stafford
NERFINISHED
ⓘ
Lady Stafford NERFINISHED ⓘ |
| notableRelative |
Edmund Beaufort, 2nd Duke of Somerset
NERFINISHED
ⓘ
Henry Stafford, 2nd Duke of Buckingham NERFINISHED ⓘ John of Gaunt, 1st Duke of Lancaster NERFINISHED ⓘ |
| politicalContext | Wars of the Roses NERFINISHED ⓘ |
| religion | Roman Catholicism ⓘ |
| sibling |
Anne Beaufort
NERFINISHED
ⓘ
Edmund Beaufort, 4th Duke of Somerset NERFINISHED ⓘ Eleanor Beaufort NERFINISHED ⓘ Elizabeth Beaufort NERFINISHED ⓘ Henry Beaufort, 3rd Duke of Somerset NERFINISHED ⓘ Joan Beaufort NERFINISHED ⓘ John Beaufort, Earl of Dorset NERFINISHED ⓘ |
| spouse |
Humphrey Stafford, 1st Duke of Buckingham
NERFINISHED
ⓘ
Humphrey Stafford, Earl of Stafford 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: Margaret Beaufort, Countess of Stafford Description of subject: Margaret Beaufort, Countess of Stafford, was a 15th-century English noblewoman of the Beaufort family and the mother of Henry Stafford, 2nd Duke of Buckingham, who played a notable role in the politics of the Wars of the Roses.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Margaret Beaufort, Countess of Devon
this entity surface form:
Margaret Beaufort