Castell Ynysgynwraidd
E648182
Castell Ynysgynwraidd is a medieval stone fortress in Monmouthshire, Wales, better known in English as Skenfrith Castle, and forms part of the historic defensive trio known as the Three Castles.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Castell Sgynfre | 1 |
| Castell Ynysgynwraidd canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7179016 — 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: Castell Ynysgynwraidd Context triple: [Skenfrith Castle, hasAlternativeName, Castell Ynysgynwraidd]
-
A.
Castell Gwyn
Castell Gwyn is the Welsh name for White Castle, a medieval stone fortress in Monmouthshire, Wales.
-
B.
Penrhyn Castle
Penrhyn Castle is a 19th-century neo-Norman country house in North Wales, renowned for its grand architecture, extensive art collection, and role in the region’s slate industry history.
-
C.
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.
-
D.
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.
-
E.
Dryslwyn Castle
Dryslwyn Castle is a medieval Welsh fortress ruin dramatically sited on a hill overlooking the Tywi Valley in Carmarthenshire, Wales.
- 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: Castell Ynysgynwraidd Target entity description: Castell Ynysgynwraidd is a medieval stone fortress in Monmouthshire, Wales, better known in English as Skenfrith Castle, and forms part of the historic defensive trio known as the Three Castles.
-
A.
Castell Gwyn
Castell Gwyn is the Welsh name for White Castle, a medieval stone fortress in Monmouthshire, Wales.
-
B.
Penrhyn Castle
Penrhyn Castle is a 19th-century neo-Norman country house in North Wales, renowned for its grand architecture, extensive art collection, and role in the region’s slate industry history.
-
C.
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.
-
D.
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.
-
E.
Dryslwyn Castle
Dryslwyn Castle is a medieval Welsh fortress ruin dramatically sited on a hill overlooking the Tywi Valley in Carmarthenshire, Wales.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
fortified structure
ⓘ
medieval stone castle ⓘ scheduled monument ⓘ tourist attraction ⓘ |
| associatedWith |
Grosmont Castle
ⓘ
White Castle ⓘ |
| builder | Hubert de Burgh ⓘ |
| built | early 13th century ⓘ |
| builtFor | defence of the Welsh Marches ⓘ |
| category | Castles in Monmouthshire ⓘ |
| controlledBy |
Cadw
ⓘ
Lords of the March ⓘ
linked to:
lords of the Marches
|
| country | Wales ⓘ |
| currentCondition | ruin ⓘ |
| era | High Middle Ages ⓘ |
| function | royal stronghold ⓘ |
| hasAlternativeName |
Castell Sgynfre
ⓘ
linked to:
Castell Ynysgynwraidd
|
| hasEnglishName | Skenfrith Castle ⓘ |
| hasFeature |
corner towers
ⓘ
curtain walls ⓘ gatehouse ⓘ inner ward ⓘ moat or ditch ⓘ outer ward ⓘ round keep ⓘ |
| hasShape | roughly rectangular plan ⓘ |
| heritageDesignation |
Grade II* listed building
ⓘ
scheduled monument ⓘ |
| languageOfName | Welsh ⓘ |
| locatedIn |
Monmouthshire
ⓘ
Monnow Valley ⓘ Skenfrith ⓘ Welsh Marches ⓘ |
| locatedOn | River Monnow ⓘ |
| materialUsed | stone ⓘ |
| nearbyFeature | Church of St Bridget, Skenfrith ⓘ |
| nearbySettlement | village of Skenfrith ⓘ |
| notableFor |
central round keep
ⓘ
well-preserved curtain walls ⓘ |
| openToPublic | yes ⓘ |
| ownership | Crown Estate ⓘ |
| partOf |
Three Castles
ⓘ
medieval defensive system of the Three Castles ⓘ |
| previousStructure | earlier earth and timber castle ⓘ |
| rebuilt | early 13th century in stone ⓘ |
| region | southeast Wales ⓘ |
| usedFor |
administrative centre
ⓘ
border defence ⓘ |
| usedUntil | 16th century ⓘ |
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: Castell Ynysgynwraidd Description of subject: Castell Ynysgynwraidd is a medieval stone fortress in Monmouthshire, Wales, better known in English as Skenfrith Castle, and forms part of the historic defensive trio known as the Three Castles.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Castell Ynysgynwraidd