Thomas, 2nd Earl of Lancaster
E186855
Thomas, 2nd Earl of Lancaster was a powerful English nobleman and cousin to King Edward II who led baronial opposition to the king and was eventually executed for his role in the rebellion.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Thomas, 2nd Earl of Lancaster canonical | 15 |
| Thomas of Lancaster | 3 |
| 2nd Earl of Lancaster | 1 |
| Thomas of Lancaster, 2nd Earl of Lancaster | 1 |
| Thomas, Earl of Lancaster | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1589413 — 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: Thomas, 2nd Earl of Lancaster Context triple: [Edward II of England, conflictWith, Thomas, 2nd Earl of Lancaster]
-
A.
Edmund Crouchback, 1st Earl of Lancaster
Edmund Crouchback, 1st Earl of Lancaster, was a 13th-century English prince and military leader who became a powerful noble through extensive landholdings and royal favor, founding the House of Lancaster.
-
B.
Roger Mortimer, 1st Earl of March
Roger Mortimer, 1st Earl of March, was a powerful 14th-century English nobleman who led the rebellion against King Edward II and effectively ruled England during the early reign of Edward III before being overthrown and executed.
-
C.
Thomas Beaufort, Duke of Exeter
Thomas Beaufort, Duke of Exeter, was an early 15th-century English nobleman, military commander, and half-uncle of King Henry V who played a prominent role in the Hundred Years’ War and royal government.
-
D.
Edmund Tudor, Duke of Somerset
Edmund Tudor, Duke of Somerset, was a short-lived English prince of the early Tudor dynasty, known primarily as the younger son of King Henry VII of England and Elizabeth of York.
-
E.
Percy, Duke of Dunstable
Percy, Duke of Dunstable is a blustering, overbearing aristocrat and comic antagonist in P. G. Wodehouse’s Blandings Castle stories.
- 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: Thomas, 2nd Earl of Lancaster Target entity description: Thomas, 2nd Earl of Lancaster was a powerful English nobleman and cousin to King Edward II who led baronial opposition to the king and was eventually executed for his role in the rebellion.
-
A.
Edmund Crouchback, 1st Earl of Lancaster
Edmund Crouchback, 1st Earl of Lancaster, was a 13th-century English prince and military leader who became a powerful noble through extensive landholdings and royal favor, founding the House of Lancaster.
-
B.
Roger Mortimer, 1st Earl of March
Roger Mortimer, 1st Earl of March, was a powerful 14th-century English nobleman who led the rebellion against King Edward II and effectively ruled England during the early reign of Edward III before being overthrown and executed.
-
C.
Thomas Beaufort, Duke of Exeter
Thomas Beaufort, Duke of Exeter, was an early 15th-century English nobleman, military commander, and half-uncle of King Henry V who played a prominent role in the Hundred Years’ War and royal government.
-
D.
Edmund Tudor, Duke of Somerset
Edmund Tudor, Duke of Somerset, was a short-lived English prince of the early Tudor dynasty, known primarily as the younger son of King Henry VII of England and Elizabeth of York.
-
E.
Percy, Duke of Dunstable
Percy, Duke of Dunstable is a blustering, overbearing aristocrat and comic antagonist in P. G. Wodehouse’s Blandings Castle stories.
- F. None of above. chosen
Statements (48)
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: Thomas, 2nd Earl of Lancaster Description of subject: Thomas, 2nd Earl of Lancaster was a powerful English nobleman and cousin to King Edward II who led baronial opposition to the king and was eventually executed for his role in the rebellion.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Thomas of Lancaster
this entity surface form:
Thomas of Lancaster
Thomas, 2nd Earl of Lancaster
→
nobleTitle
→
Thomas, 2nd Earl of Lancaster
self-linksurface differs
ⓘ
this entity surface form:
2nd Earl of Lancaster
subject surface form:
Earl of Lancaster (1267 creation)
subject surface form:
Earl of Lancaster (1267 creation)
this entity surface form:
Thomas, Earl of Lancaster
this entity surface form:
Thomas of Lancaster, 2nd Earl of Lancaster
this entity surface form:
Thomas of Lancaster