Eustace II, Count of Boulogne
E440457
French noble
count
medieval nobleman
participant in the Norman Conquest of England
supporter of William the Conqueror
Eustace II, Count of Boulogne, was an 11th-century French nobleman and prominent supporter of William the Conqueror, noted for his role in the Norman Conquest of England and as the father of the First Crusade leader Godfrey of Bouillon.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eustace II, Count of Boulogne canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T4371105 — 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: Eustace II, Count of Boulogne Context triple: [Godfrey of Bouillon, father, Eustace II, Count of Boulogne]
-
A.
Eustace III, Count of Boulogne
Eustace III, Count of Boulogne, was a prominent 11th–12th century French nobleman and crusader who ruled the strategically important County of Boulogne and was connected by marriage to the Scottish royal family.
-
B.
Baldwin of Flanders
Baldwin of Flanders was a prominent medieval nobleman who became the first Latin Emperor of Constantinople after the Fourth Crusade.
-
C.
Theobald of Bec
Theobald of Bec was a 12th-century Archbishop of Canterbury and influential churchman who played a key role in English ecclesiastical politics before the time of Thomas Becket.
-
D.
Philip I, Count of Boulogne
Philip I, Count of Boulogne was a French prince of the Capetian dynasty who held the County of Boulogne in the early 13th century and was a son of King Philip II of France.
-
E.
Hugh of Vermandois
Hugh of Vermandois was a French nobleman and younger brother of King Philip I of France who served as one of the prominent princely leaders during the First Crusade.
- 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: Eustace II, Count of Boulogne Target entity description: Eustace II, Count of Boulogne, was an 11th-century French nobleman and prominent supporter of William the Conqueror, noted for his role in the Norman Conquest of England and as the father of the First Crusade leader Godfrey of Bouillon.
-
A.
Eustace III, Count of Boulogne
Eustace III, Count of Boulogne, was a prominent 11th–12th century French nobleman and crusader who ruled the strategically important County of Boulogne and was connected by marriage to the Scottish royal family.
-
B.
Baldwin of Flanders
Baldwin of Flanders was a prominent medieval nobleman who became the first Latin Emperor of Constantinople after the Fourth Crusade.
-
C.
Theobald of Bec
Theobald of Bec was a 12th-century Archbishop of Canterbury and influential churchman who played a key role in English ecclesiastical politics before the time of Thomas Becket.
-
D.
Philip I, Count of Boulogne
Philip I, Count of Boulogne was a French prince of the Capetian dynasty who held the County of Boulogne in the early 13th century and was a son of King Philip II of France.
-
E.
Hugh of Vermandois
Hugh of Vermandois was a French nobleman and younger brother of King Philip I of France who served as one of the prominent princely leaders during the First Crusade.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
French noble
ⓘ
count ⓘ medieval nobleman ⓘ participant in the Norman Conquest of England ⓘ supporter of William the Conqueror ⓘ |
| allegiance |
Duchy of Normandy
NERFINISHED
ⓘ
Kingdom of England NERFINISHED ⓘ |
| alsoKnownAs | Eustace II of Boulogne NERFINISHED ⓘ |
| appearsIn | Bayeux Tapestry NERFINISHED ⓘ |
| associatedWith | First Crusade (through his sons) ⓘ |
| birthDate | c. 1015 ⓘ |
| child |
Baldwin I of Jerusalem
NERFINISHED
ⓘ
Eustace III, Count of Boulogne NERFINISHED ⓘ Godfrey of Bouillon NERFINISHED ⓘ |
| country | County of Boulogne NERFINISHED ⓘ |
| deathDate | c. 1087 ⓘ |
| era | 11th century ⓘ |
| ethnicGroup | Franco-Flemish nobility ⓘ |
| father | Eustace I, Count of Boulogne NERFINISHED ⓘ |
| heldTitle | Count of Lens NERFINISHED ⓘ |
| involvedIn | Dover incident of 1051 NERFINISHED ⓘ |
| language | Old French ⓘ |
| militaryEngagement | Battle of Hastings NERFINISHED ⓘ |
| mother | Matilda of Leuven NERFINISHED ⓘ |
| name | Eustace II NERFINISHED ⓘ |
| nobleFamily | House of Boulogne NERFINISHED ⓘ |
| nobleRank | count ⓘ |
| notableFor |
being father of Baldwin I of Jerusalem
ⓘ
being father of Godfrey of Bouillon ⓘ role in the Norman Conquest of England ⓘ |
| participatedIn | Norman Conquest of England NERFINISHED ⓘ |
| politicalRole |
ally of William the Conqueror
ⓘ
continental supporter of Norman rule in England ⓘ |
| positionHeld | Count of Boulogne NERFINISHED ⓘ |
| predecessor | Eustace I, Count of Boulogne NERFINISHED ⓘ |
| region | Northern France NERFINISHED ⓘ |
| reignEnd | after 1087 ⓘ |
| reignStart | c. 1049 ⓘ |
| relative | Edward the Confessor NERFINISHED ⓘ |
| religion | Roman Catholicism ⓘ |
| spouse |
Godgifu of Wessex
NERFINISHED
ⓘ
Ida of Lorraine NERFINISHED ⓘ |
| successor | Eustace III, Count of Boulogne NERFINISHED ⓘ |
| supported | William the Conqueror NERFINISHED ⓘ |
| territorialBase | Boulogne-sur-Mer NERFINISHED ⓘ |
| title | Count of Boulogne 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: Eustace II, Count of Boulogne Description of subject: Eustace II, Count of Boulogne, was an 11th-century French nobleman and prominent supporter of William the Conqueror, noted for his role in the Norman Conquest of England and as the father of the First Crusade leader Godfrey of Bouillon.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.