Matilda of Lancaster
E889696
Matilda of Lancaster was a 14th-century English noblewoman of the royal House of Lancaster who became Countess of Ulster through marriage and was connected to the Welsh prince Dafydd ap Gruffudd by family ties.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Matilda of Lancaster canonical | 1 |
| Maud of Lancaster | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10847548 — 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: Matilda of Lancaster Context triple: [Dafydd ap Gruffudd, motherInLaw, Matilda of Lancaster]
-
A.
Eleanor of Lancaster
Eleanor of Lancaster was a 14th-century English noblewoman of the royal Plantagenet line who became Countess of Arundel and Warenne through marriage.
-
B.
Philippa of Lancaster
Philippa of Lancaster was an English-born queen consort of Portugal from the House of Lancaster, whose marriage to King John I helped solidify the Anglo-Portuguese alliance and produced several influential royal children, including Henry the Navigator.
-
C.
Mary of Lancaster
Mary of Lancaster was a medieval English noblewoman, daughter of Edmund Crouchback, 1st Earl of Lancaster, and a member of the royal Plantagenet family.
-
D.
Blanche of Lancaster
Blanche of Lancaster was a 14th-century English noblewoman, heiress, and first wife of John of Gaunt, whose inheritance helped lay the foundations of the Lancastrian branch of the English royal family.
-
E.
Isabella of Gloucester
Isabella of Gloucester was an English noblewoman and heiress who became the first wife of King John of England, bringing him substantial lands and political influence through their marriage.
- 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: Matilda of Lancaster Target entity description: Matilda of Lancaster was a 14th-century English noblewoman of the royal House of Lancaster who became Countess of Ulster through marriage and was connected to the Welsh prince Dafydd ap Gruffudd by family ties.
-
A.
Eleanor of Lancaster
Eleanor of Lancaster was a 14th-century English noblewoman of the royal Plantagenet line who became Countess of Arundel and Warenne through marriage.
-
B.
Philippa of Lancaster
Philippa of Lancaster was an English-born queen consort of Portugal from the House of Lancaster, whose marriage to King John I helped solidify the Anglo-Portuguese alliance and produced several influential royal children, including Henry the Navigator.
-
C.
Mary of Lancaster
Mary of Lancaster was a medieval English noblewoman, daughter of Edmund Crouchback, 1st Earl of Lancaster, and a member of the royal Plantagenet family.
-
D.
Blanche of Lancaster
Blanche of Lancaster was a 14th-century English noblewoman, heiress, and first wife of John of Gaunt, whose inheritance helped lay the foundations of the Lancastrian branch of the English royal family.
-
E.
Isabella of Gloucester
Isabella of Gloucester was an English noblewoman and heiress who became the first wife of King John of England, bringing him substantial lands and political influence through their marriage.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
Countess of Ulster
ⓘ
English noblewoman ⓘ medieval noble ⓘ member of the English royal family ⓘ |
| alsoKnownAs | Maud of Lancaster NERFINISHED ⓘ |
| associatedWith |
Earldom of Ulster
NERFINISHED
ⓘ
Irish nobility ⓘ |
| burialPlace | Campsey Priory NERFINISHED ⓘ |
| centuryOfActivity | 14th century ⓘ |
| child | Elizabeth de Burgh, 4th Countess of Ulster NERFINISHED ⓘ |
| countryOfCitizenship | Kingdom of England ⓘ |
| dateOfBirth | circa 1310 ⓘ |
| dateOfDeath | 5 May 1377 ⓘ |
| era | High Middle Ages ⓘ |
| father | Henry, 3rd Earl of Lancaster NERFINISHED ⓘ |
| gender | female ⓘ |
| givenName | Matilda NERFINISHED ⓘ |
| grandfather | Edmund Crouchback, 1st Earl of Lancaster NERFINISHED ⓘ |
| greatGrandfather | Henry III of England NERFINISHED ⓘ |
| heldTitleThrough | marriage to William Donn de Burgh, 3rd Earl of Ulster ⓘ |
| languageSpoken | Middle English ⓘ |
| marriageDate | circa 1327 ⓘ |
| marriagePlace | Kingdom of England NERFINISHED ⓘ |
| memberOf | House of Lancaster NERFINISHED ⓘ |
| mother | Maud Chaworth NERFINISHED ⓘ |
| nobleFamily | Lancaster NERFINISHED ⓘ |
| notableFor |
being a member of the royal Plantagenet line through the House of Lancaster
ⓘ
her role in the transmission of the Ulster and de Burgh inheritance ⓘ |
| placeOfBirth | Kingdom of England NERFINISHED ⓘ |
| placeOfDeath | Kingdom of England NERFINISHED ⓘ |
| relative | Dafydd ap Gruffudd NERFINISHED ⓘ |
| religion | Roman Catholicism ⓘ |
| sibling |
Blanche of Lancaster
NERFINISHED
ⓘ
Henry of Grosmont, 1st Duke of Lancaster NERFINISHED ⓘ |
| socialRank | nobility ⓘ |
| spouse | William Donn de Burgh, 3rd Earl of Ulster NERFINISHED ⓘ |
| title |
Countess of Ulster
NERFINISHED
ⓘ
Lady of Connacht NERFINISHED ⓘ |
| uncle | Thomas, 2nd Earl of Lancaster 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: Matilda of Lancaster Description of subject: Matilda of Lancaster was a 14th-century English noblewoman of the royal House of Lancaster who became Countess of Ulster through marriage and was connected to the Welsh prince Dafydd ap Gruffudd by family ties.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Maud of Lancaster