Geoffrey de Mandeville, 1st Earl of Essex
E941478
Geoffrey de Mandeville, 1st Earl of Essex, was a powerful 12th-century Anglo-Norman nobleman and magnate who played a prominent and often turbulent role in the civil war known as The Anarchy during the reign of King Stephen.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Geoffrey de Mandeville, 1st Earl of Essex canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11650218 — 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: Geoffrey de Mandeville, 1st Earl of Essex Context triple: [Walden Abbey, foundedBy, Geoffrey de Mandeville, 1st Earl of Essex]
-
A.
Geoffrey de Mandeville, 2nd Earl of Essex
Geoffrey de Mandeville, 2nd Earl of Essex, was a prominent 12th-century English nobleman and magnate who held extensive lands and influence during the reigns of Kings Richard I and John.
-
B.
Robert de Beaumont, 1st Earl of Leicester
Robert de Beaumont, 1st Earl of Leicester, was a powerful 11th–12th century Anglo-Norman nobleman and close advisor to King Henry I of England, noted for his military and political influence after the Norman Conquest.
-
C.
Robert de Beaumont, 2nd Earl of Leicester
Robert de Beaumont, 2nd Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who served as Chief Justiciar of England under King Henry II.
-
D.
Robert de Beaumont, 3rd Earl of Leicester
Robert de Beaumont, 3rd Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who played a key role in the politics of King Henry II’s reign.
-
E.
Robert de Beaumont, 4th Earl of Leicester
Robert de Beaumont, 4th Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who served as a key advisor and military leader under King Henry II of England.
- 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: Geoffrey de Mandeville, 1st Earl of Essex Target entity description: Geoffrey de Mandeville, 1st Earl of Essex, was a powerful 12th-century Anglo-Norman nobleman and magnate who played a prominent and often turbulent role in the civil war known as The Anarchy during the reign of King Stephen.
-
A.
Geoffrey de Mandeville, 2nd Earl of Essex
Geoffrey de Mandeville, 2nd Earl of Essex, was a prominent 12th-century English nobleman and magnate who held extensive lands and influence during the reigns of Kings Richard I and John.
-
B.
Robert de Beaumont, 1st Earl of Leicester
Robert de Beaumont, 1st Earl of Leicester, was a powerful 11th–12th century Anglo-Norman nobleman and close advisor to King Henry I of England, noted for his military and political influence after the Norman Conquest.
-
C.
Robert de Beaumont, 2nd Earl of Leicester
Robert de Beaumont, 2nd Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who served as Chief Justiciar of England under King Henry II.
-
D.
Robert de Beaumont, 3rd Earl of Leicester
Robert de Beaumont, 3rd Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who played a key role in the politics of King Henry II’s reign.
-
E.
Robert de Beaumont, 4th Earl of Leicester
Robert de Beaumont, 4th Earl of Leicester, was a prominent 12th-century Anglo-Norman nobleman and statesman who served as a key advisor and military leader under King Henry II of England.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Anglo-Norman nobleman
ⓘ
Earl ⓘ human ⓘ medieval magnate ⓘ |
| burialPlace |
London
NERFINISHED
ⓘ
Temple Church, London NERFINISHED ⓘ |
| conflict | Siege warfare in the Fens ⓘ |
| countryOfCitizenship | Kingdom of England ⓘ |
| deathCause | battle wound ⓘ |
| died | 1144 ⓘ |
| diedIn |
Mildenhall
NERFINISHED
ⓘ
Suffolk NERFINISHED ⓘ |
| ethnicGroup | Norman ⓘ |
| familyName | de Mandeville NERFINISHED ⓘ |
| father | William de Mandeville NERFINISHED ⓘ |
| floruit | 12th century ⓘ |
| founded | Walden Abbey NERFINISHED ⓘ |
| givenName | Geoffrey NERFINISHED ⓘ |
| hasDaughter | Maud de Mandeville NERFINISHED ⓘ |
| hasSon |
Geoffrey de Mandeville, 2nd Earl of Essex
NERFINISHED
ⓘ
Robert de Mandeville NERFINISHED ⓘ William de Mandeville, 3rd Earl of Essex NERFINISHED ⓘ |
| heldOfficeDuringReignOf | King Stephen of England NERFINISHED ⓘ |
| mother | Margaret de Rye NERFINISHED ⓘ |
| nobleFamily | de Mandeville family NERFINISHED ⓘ |
| nobleTitle | Earl of Essex NERFINISHED ⓘ |
| notableFor |
banditry in the Fens
ⓘ
changing sides during The Anarchy ⓘ rebellion against King Stephen ⓘ |
| notableWork | Foundation of Walden Abbey NERFINISHED ⓘ |
| opponent |
Empress Matilda
NERFINISHED
ⓘ
King Stephen of England NERFINISHED ⓘ |
| participatedIn | The Anarchy NERFINISHED ⓘ |
| positionHeld |
Constable of the Tower of London
ⓘ
Earl of Essex NERFINISHED ⓘ Justiciar NERFINISHED ⓘ Sheriff of Essex ⓘ Sheriff of Hertfordshire NERFINISHED ⓘ Sheriff of London NERFINISHED ⓘ Sheriff of Middlesex NERFINISHED ⓘ |
| regionOfActivity |
Essex
NERFINISHED
ⓘ
Fenlands of eastern England ⓘ London NERFINISHED ⓘ |
| religion |
Roman Catholicism
ⓘ
surface form:
Catholicism
|
| spouse |
Rohese de Vere
NERFINISHED
ⓘ
Rohese of Essex NERFINISHED ⓘ |
| supported |
Empress Matilda
NERFINISHED
ⓘ
King Stephen of England NERFINISHED ⓘ |
| wasGrantedEarldom | Essex NERFINISHED ⓘ |
| wasGrantedTitleBy | King Stephen of England 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: Geoffrey de Mandeville, 1st Earl of Essex Description of subject: Geoffrey de Mandeville, 1st Earl of Essex, was a powerful 12th-century Anglo-Norman nobleman and magnate who played a prominent and often turbulent role in the civil war known as The Anarchy during the reign of King Stephen.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.