1st Earl of March
E524157
The 1st Earl of March was an English noble title held by Roger Mortimer, a powerful medieval magnate central to the deposition of King Edward II.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1st Earl of March canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5492369 — 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: 1st Earl of March Context triple: [Roger Mortimer, 1st Earl of March, nobleTitle, 1st Earl of March]
-
A.
3rd Earl of March
The 3rd Earl of March was a Scottish noble title in the Douglas family, later associated with William Douglas, 4th Duke of Queensberry, during the 18th century.
-
B.
William Douglas, 2nd Earl of March
William Douglas, 2nd Earl of March, was an 18th-century Scottish nobleman and politician from the influential Douglas family, whose titles and estates later passed to his son, the 4th Duke of Queensberry.
-
C.
Earl of Richmond
The Earl of Richmond was a prominent English noble title historically associated with significant political influence and royal connections, notably held by figures linked to the Tudor dynasty.
-
D.
Richard Plantagenet, 3rd Duke of York
Richard Plantagenet, 3rd Duke of York was a key 15th-century English noble and claimant to the throne whose dynastic struggle with the Lancastrians helped ignite the Wars of the Roses and paved the way for the Yorkist kings.
-
E.
Robert, 1st Earl of Gloucester
Robert, 1st Earl of Gloucester was a powerful 12th-century Anglo-Norman nobleman and military leader, best known as a key supporter of Empress Matilda during the civil war known as The Anarchy.
- 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: 1st Earl of March Target entity description: The 1st Earl of March was an English noble title held by Roger Mortimer, a powerful medieval magnate central to the deposition of King Edward II.
-
A.
3rd Earl of March
The 3rd Earl of March was a Scottish noble title in the Douglas family, later associated with William Douglas, 4th Duke of Queensberry, during the 18th century.
-
B.
William Douglas, 2nd Earl of March
William Douglas, 2nd Earl of March, was an 18th-century Scottish nobleman and politician from the influential Douglas family, whose titles and estates later passed to his son, the 4th Duke of Queensberry.
-
C.
Earl of Richmond
The Earl of Richmond was a prominent English noble title historically associated with significant political influence and royal connections, notably held by figures linked to the Tudor dynasty.
-
D.
Richard Plantagenet, 3rd Duke of York
Richard Plantagenet, 3rd Duke of York was a key 15th-century English noble and claimant to the throne whose dynastic struggle with the Lancastrians helped ignite the Wars of the Roses and paved the way for the Yorkist kings.
-
E.
Robert, 1st Earl of Gloucester
Robert, 1st Earl of Gloucester was a powerful 12th-century Anglo-Norman nobleman and military leader, best known as a key supporter of Empress Matilda during the civil war known as The Anarchy.
- F. None of above. chosen
Statements (47)
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: 1st Earl of March Description of subject: The 1st Earl of March was an English noble title held by Roger Mortimer, a powerful medieval magnate central to the deposition of King Edward II.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.