Iorwerth Drwyndwn
E922600
Iorwerth Drwyndwn was a 12th-century Welsh prince of Gwynedd, notable as the disinherited elder son of Owain Gwynedd and the father of Llywelyn the Great.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Iorwerth Drwyndwn canonical | 2 |
| Iorwerth | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11165834 — 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: Iorwerth Drwyndwn Context triple: [Llywelyn the Great, father, Iorwerth Drwyndwn]
-
A.
Owain
Owain is a given name of Welsh origin, traditionally borne by several figures in Welsh mythology and medieval literature.
-
B.
Myrddin Wyllt
Myrddin Wyllt is a legendary mad prophet and wild man of the woods from early Welsh tradition, often seen as a historical and mythological precursor to the later figure of Merlin.
-
C.
Bedwyr
Bedwyr is a figure from Arthurian legend, known in Welsh tradition as a close companion and warrior of King Arthur.
-
D.
Madog ap Llywelyn
Madog ap Llywelyn was a Welsh nobleman who led a major revolt against English rule in Wales in 1294–1295, briefly styling himself Prince of Wales.
-
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: Iorwerth Drwyndwn Target entity description: Iorwerth Drwyndwn was a 12th-century Welsh prince of Gwynedd, notable as the disinherited elder son of Owain Gwynedd and the father of Llywelyn the Great.
-
A.
Owain
Owain is a given name of Welsh origin, traditionally borne by several figures in Welsh mythology and medieval literature.
-
B.
Myrddin Wyllt
Myrddin Wyllt is a legendary mad prophet and wild man of the woods from early Welsh tradition, often seen as a historical and mythological precursor to the later figure of Merlin.
-
C.
Bedwyr
Bedwyr is a figure from Arthurian legend, known in Welsh tradition as a close companion and warrior of King Arthur.
-
D.
Madog ap Llywelyn
Madog ap Llywelyn was a Welsh nobleman who led a major revolt against English rule in Wales in 1294–1295, briefly styling himself Prince of Wales.
-
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 (35)
| Predicate | Object |
|---|---|
| instanceOf |
Welsh prince
ⓘ
historical figure ⓘ |
| centuryOfBirth | 12th century ⓘ |
| centuryOfDeath | 12th century ⓘ |
| child | Llywelyn the Great ⓘ |
| countryOfCitizenship | Wales ⓘ |
| culture | Medieval Welsh ⓘ |
| dateOfBirth | 12th century ⓘ |
| dateOfDeath | 12th century ⓘ |
| describedAs |
disinherited heir of Gwynedd
ⓘ
elder son of Owain Gwynedd ⓘ |
| ethnicGroup | Welsh ⓘ |
| father | Owain Gwynedd ⓘ |
| givenName |
Iorwerth
ⓘ
linked to:
Iorwerth Drwyndwn
|
| hasDescendant | Llywelyn the Great ⓘ |
| languageSpoken | Welsh ⓘ |
| memberOf | House of Aberffraw ⓘ |
| mother | Gwladus ferch Llywarch ⓘ |
| nickname | Drwyndwn ⓘ |
| nobleFamily | Aberffraw dynasty ⓘ |
| nobleTitle | prince ⓘ |
| notableFor |
being the disinherited elder son of Owain Gwynedd
ⓘ
being the father of Llywelyn the Great ⓘ |
| partOf | Welsh royalty ⓘ |
| placeOfBirth | Gwynedd ⓘ |
| placeOfDeath | Wales ⓘ |
| positionHeld | prince of Gwynedd ⓘ |
| region | Gwynedd ⓘ |
| relative |
Gwladus ferch Llywarch
ⓘ
Llywelyn the Great ⓘ Owain Gwynedd ⓘ |
| religion | Christianity ⓘ |
| sexOrGender | male ⓘ |
| timePeriod |
12th-century Wales
ⓘ
Middle Ages ⓘ |
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: Iorwerth Drwyndwn Description of subject: Iorwerth Drwyndwn was a 12th-century Welsh prince of Gwynedd, notable as the disinherited elder son of Owain Gwynedd and the father of Llywelyn the Great.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Iorwerth Drwyndwn