Dafydd II of Gwynedd
E439510
Dafydd II of Gwynedd was a 13th-century Prince of Wales and ruler of the Kingdom of Gwynedd, known for his resistance to English conquest under King Edward I.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dafydd ap Llywelyn | 3 |
| Dafydd II of Gwynedd canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4415277 — 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: Dafydd II of Gwynedd Context triple: [Dafydd, hasNotableBearer, Dafydd II of Gwynedd]
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A.
Dafydd I of Gwynedd
Dafydd I of Gwynedd was a 13th-century Prince of Gwynedd and briefly ruler of much of Wales, known for his conflicts with his brother Llywelyn the Great and his dealings with the English crown.
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B.
Llywelyn ap Gruffudd
Llywelyn ap Gruffudd was the 13th-century Prince of Wales and the last native ruler to unite much of Wales before its conquest by England.
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C.
Llywelyn the Great
Llywelyn the Great was a 13th-century Prince of Gwynedd who became the most powerful Welsh ruler of his time, effectively uniting much of Wales under his leadership.
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D.
Llewelyn
Llewelyn is a Welsh given name of Celtic origin traditionally used for males.
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E.
Rhodri Morgan
Rhodri Morgan was a Welsh Labour politician who led the Welsh Government in its early years of devolution and helped shape the modern political landscape of 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: Dafydd II of Gwynedd Target entity description: Dafydd II of Gwynedd was a 13th-century Prince of Wales and ruler of the Kingdom of Gwynedd, known for his resistance to English conquest under King Edward I.
-
A.
Dafydd I of Gwynedd
Dafydd I of Gwynedd was a 13th-century Prince of Gwynedd and briefly ruler of much of Wales, known for his conflicts with his brother Llywelyn the Great and his dealings with the English crown.
-
B.
Llywelyn ap Gruffudd
Llywelyn ap Gruffudd was the 13th-century Prince of Wales and the last native ruler to unite much of Wales before its conquest by England.
-
C.
Llywelyn the Great
Llywelyn the Great was a 13th-century Prince of Gwynedd who became the most powerful Welsh ruler of his time, effectively uniting much of Wales under his leadership.
-
D.
Llewelyn
Llewelyn is a Welsh given name of Celtic origin traditionally used for males.
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E.
Rhodri Morgan
Rhodri Morgan was a Welsh Labour politician who led the Welsh Government in its early years of devolution and helped shape the modern political landscape of Wales.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
13th-century Welsh person
ⓘ
Prince of Wales ⓘ Welsh prince ⓘ human ⓘ medieval ruler ⓘ |
| burialPlace | Aberconwy Abbey NERFINISHED ⓘ |
| conflict | Anglo-Welsh wars NERFINISHED ⓘ |
| countryOfCitizenship | Kingdom of Gwynedd NERFINISHED ⓘ |
| dateOfBirth | c. 1208 ⓘ |
| dateOfDeath | 1246 ⓘ |
| era | High Middle Ages ⓘ |
| ethnicGroup | Welsh ⓘ |
| father | Llywelyn the Great NERFINISHED ⓘ |
| givenName | Dafydd NERFINISHED ⓘ |
| languageSpoken |
Latin
ⓘ
Welsh ⓘ |
| memberOfDynasty | House of Aberffraw NERFINISHED ⓘ |
| mother |
Joan, Lady of Wales
NERFINISHED
ⓘ
Siwan ferch John NERFINISHED ⓘ |
| nobleRank | prince ⓘ |
| nobleTitle |
Lord of Snowdon
NERFINISHED
ⓘ
Prince of Gwynedd NERFINISHED ⓘ Prince of Wales NERFINISHED ⓘ |
| notableEvent |
imprisonment of his half-brother Gruffudd ap Llywelyn
ⓘ
treaty negotiations with Henry III of England ⓘ |
| notableFamilyConnection | grandson of King John of England through his mother ⓘ |
| opponent | Henry III of England NERFINISHED ⓘ |
| placeOfBirth | Gwynedd NERFINISHED ⓘ |
| placeOfDeath | Gwynedd NERFINISHED ⓘ |
| positionHeld |
Lord of Snowdon
NERFINISHED
ⓘ
Prince of Gwynedd NERFINISHED ⓘ Prince of Wales NERFINISHED ⓘ |
| predecessor | Llywelyn the Great NERFINISHED ⓘ |
| reignEnd | 1246 ⓘ |
| reignStart | 1240 ⓘ |
| religion | Roman Catholicism ⓘ |
| sexOrGender | male ⓘ |
| sibling |
Angharad ferch Llywelyn
NERFINISHED
ⓘ
Elen ferch Llywelyn NERFINISHED ⓘ Gruffudd ap Llywelyn NERFINISHED ⓘ Gwladus Ddu NERFINISHED ⓘ Helen of Wales NERFINISHED ⓘ Margaret ferch Llywelyn NERFINISHED ⓘ |
| spouse | Isabella de Braose NERFINISHED ⓘ |
| successor |
Llywelyn ap Gruffudd
NERFINISHED
ⓘ
Owain Goch ap Gruffudd NERFINISHED ⓘ |
| territoryRuled |
Gwynedd
NERFINISHED
ⓘ
parts of north Wales ⓘ |
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: Dafydd II of Gwynedd Description of subject: Dafydd II of Gwynedd was a 13th-century Prince of Wales and ruler of the Kingdom of Gwynedd, known for his resistance to English conquest under King Edward I.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Dafydd ap Llywelyn
this entity surface form:
Dafydd ap Llywelyn
this entity surface form:
Dafydd ap Llywelyn