Codnor Castle
E703136
Codnor Castle is a medieval ruined fortress in Derbyshire, England, historically associated with the powerful Grey family and notable for its surviving earthworks and stone remains.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Codnor Castle canonical | 3 |
| Codnor Castle Heritage Trust | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7976474 — 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: Codnor Castle Context triple: [Codnor, knownFor, Codnor Castle]
-
A.
Dinefwr Castle
Dinefwr Castle is a medieval Welsh fortress in Carmarthenshire, historically associated with the princes of Deheubarth and renowned for its picturesque hilltop ruins overlooking the surrounding countryside.
-
B.
Dryslwyn Castle
Dryslwyn Castle is a medieval Welsh fortress ruin dramatically sited on a hill overlooking the Tywi Valley in Carmarthenshire, Wales.
-
C.
Bodelwyddan Castle
Bodelwyddan Castle is a 19th-century Gothic Revival country house and former historic house museum in North Wales, noted for its distinctive architecture and parkland setting.
-
D.
Ciergnon Castle
Ciergnon Castle is a royal residence in Belgium used by the Belgian royal family as a country retreat and hunting lodge.
-
E.
Dolwyddelan Castle
Dolwyddelan Castle is a medieval Welsh fortress in Snowdonia, traditionally associated with the native prince Llywelyn the Great and commanding a strategic mountain pass.
- 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: Codnor Castle Target entity description: Codnor Castle is a medieval ruined fortress in Derbyshire, England, historically associated with the powerful Grey family and notable for its surviving earthworks and stone remains.
-
A.
Dinefwr Castle
Dinefwr Castle is a medieval Welsh fortress in Carmarthenshire, historically associated with the princes of Deheubarth and renowned for its picturesque hilltop ruins overlooking the surrounding countryside.
-
B.
Dryslwyn Castle
Dryslwyn Castle is a medieval Welsh fortress ruin dramatically sited on a hill overlooking the Tywi Valley in Carmarthenshire, Wales.
-
C.
Bodelwyddan Castle
Bodelwyddan Castle is a 19th-century Gothic Revival country house and former historic house museum in North Wales, noted for its distinctive architecture and parkland setting.
-
D.
Ciergnon Castle
Ciergnon Castle is a royal residence in Belgium used by the Belgian royal family as a country retreat and hunting lodge.
-
E.
Dolwyddelan Castle
Dolwyddelan Castle is a medieval Welsh fortress in Snowdonia, traditionally associated with the native prince Llywelyn the Great and commanding a strategic mountain pass.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
medieval castle
ⓘ
ruined fortress ⓘ |
| access | public footpath ⓘ |
| architecturalStyle | medieval military architecture ⓘ |
| builtFor | de Grey family ⓘ |
| constructionStart | 12th century ⓘ |
| country | England ⓘ |
| currentCondition | ruin ⓘ |
| hasArchaeologicalEvidence |
defensive earthworks
ⓘ
medieval occupation layers ⓘ stone foundations ⓘ |
| hasPart |
banked earthworks
ⓘ
curtain wall remains ⓘ defensive ditches ⓘ fishpond earthworks ⓘ gatehouse remains ⓘ moat earthworks ⓘ outer bailey earthworks ⓘ tower remains ⓘ |
| hasView |
Erewash Valley
ⓘ
linked to:
Erewash
|
| heritageDesignation |
Grade II listed building
ⓘ
Scheduled Monument ⓘ |
| historicallyAssociatedWith |
Barons Grey of Codnor
ⓘ
Grey family ⓘ |
| inception | 12th century ⓘ |
| locatedIn |
Amber Valley
ⓘ
Codnor ⓘ Derbyshire ⓘ East Midlands ⓘ |
| locatedOn | ridge above the Erewash Valley ⓘ |
| managedBy |
Codnor Castle Heritage Trust
ⓘ
linked to:
Codnor Castle
|
| materialUsed | stone ⓘ |
| nearbySettlement |
Codnor
ⓘ
Crosshill ⓘ Loscoe ⓘ |
| notableFeature |
elevated strategic position
ⓘ
substantial earthwork defences ⓘ surviving stone wall fragments ⓘ |
| notableResident |
Henry Grey, 1st Baron Grey of Codnor
ⓘ
Richard Grey, 3rd Baron Grey of Codnor ⓘ |
| openToPublic | yes ⓘ |
| ownedBy | private owner ⓘ |
| partOf | medieval defensive network of Derbyshire ⓘ |
| referencedIn | historic documents relating to the Grey family ⓘ |
| significantModification |
13th century
ⓘ
14th century ⓘ |
| usedFor |
administrative centre of local estates
ⓘ
fortified residence ⓘ military defence ⓘ |
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: Codnor Castle Description of subject: Codnor Castle is a medieval ruined fortress in Derbyshire, England, historically associated with the powerful Grey family and notable for its surviving earthworks and stone remains.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.