Mary of Lancaster
E245407
Mary of Lancaster was a medieval English noblewoman, daughter of Edmund Crouchback, 1st Earl of Lancaster, and a member of the royal Plantagenet family.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mary of Lancaster canonical | 4 |
| Joan of Lancaster | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2219537 — 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: Mary of Lancaster Context triple: [Edmund Crouchback, 1st Earl of Lancaster, child, Mary of Lancaster]
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A.
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.
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B.
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.
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C.
Catherine of Lancaster
Catherine of Lancaster was a late 14th- and early 15th-century English princess who became Queen of Castile through marriage, helping to link the English royal line with the Iberian Trastámara dynasty.
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D.
Cecily of York
Cecily of York was an English princess of the House of York, daughter of King Edward IV, whose marriages were entangled in the dynastic politics of the Wars of the Roses and early Tudor period.
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E.
Anne of York
Anne of York was a 15th-century English princess, daughter of King Edward IV and sister of the ill-fated Edward V, who became a Yorkist noblewoman through her politically significant marriages.
- 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: Mary of Lancaster Target entity description: Mary of Lancaster was a medieval English noblewoman, daughter of Edmund Crouchback, 1st Earl of Lancaster, and a member of the royal Plantagenet family.
-
A.
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.
-
B.
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.
-
C.
Catherine of Lancaster
Catherine of Lancaster was a late 14th- and early 15th-century English princess who became Queen of Castile through marriage, helping to link the English royal line with the Iberian Trastámara dynasty.
-
D.
Cecily of York
Cecily of York was an English princess of the House of York, daughter of King Edward IV, whose marriages were entangled in the dynastic politics of the Wars of the Roses and early Tudor period.
-
E.
Anne of York
Anne of York was a 15th-century English princess, daughter of King Edward IV and sister of the ill-fated Edward V, who became a Yorkist noblewoman through her politically significant marriages.
- F. None of above. chosen
Statements (37)
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: Mary of Lancaster Description of subject: Mary of Lancaster was a medieval English noblewoman, daughter of Edmund Crouchback, 1st Earl of Lancaster, and a member of the royal Plantagenet family.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Joan of Lancaster