Ferdinand of Castile, Lord of Ledesma
E874955
Ferdinand of Castile, Lord of Ledesma, was an infante of Castile and nobleman of the 13th century, known primarily as a younger son of King Ferdinand III who held lordship over the town of Ledesma.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Ferdinand of Castile, Lord of Ledesma canonical | 1 |
| Ferdinand of Castile, Lord of Lemos | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10120740 — 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: Ferdinand of Castile, Lord of Ledesma Context triple: [Ferdinand III of Castile, child, Ferdinand of Castile, Lord of Ledesma]
-
A.
Ferdinand de la Cerda
Ferdinand de la Cerda was a 13th-century Castilian infante and heir apparent to the throne of Castile, known for his dynastic significance in medieval Iberian politics.
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B.
Alfonso of Castile
Alfonso of Castile was a medieval Castilian royal prince who held the title Prince of Asturias as heir to the throne of Castile.
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C.
Alfonso, King of Castile
"Alfonso, King of Castile" is a historical tragedy by Matthew Gregory Lewis that dramatizes the turbulent reign and personal conflicts of a medieval Castilian monarch.
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D.
Infante Ferdinand of Spain
Infante Ferdinand of Spain was an 18th-century Spanish prince of the Bourbon dynasty, known as the son of King Charles III and a prominent member of the Spanish royal family.
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E.
Peter of Castile
Peter of Castile, also known as Peter the Cruel or Peter the Just, was the 14th-century king of Castile and León whose turbulent reign was marked by civil war, shifting alliances, and a lasting reputation for both brutality and administrative reform.
- 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: Ferdinand of Castile, Lord of Ledesma Target entity description: Ferdinand of Castile, Lord of Ledesma, was an infante of Castile and nobleman of the 13th century, known primarily as a younger son of King Ferdinand III who held lordship over the town of Ledesma.
-
A.
Ferdinand de la Cerda
Ferdinand de la Cerda was a 13th-century Castilian infante and heir apparent to the throne of Castile, known for his dynastic significance in medieval Iberian politics.
-
B.
Alfonso of Castile
Alfonso of Castile was a medieval Castilian royal prince who held the title Prince of Asturias as heir to the throne of Castile.
-
C.
Alfonso, King of Castile
"Alfonso, King of Castile" is a historical tragedy by Matthew Gregory Lewis that dramatizes the turbulent reign and personal conflicts of a medieval Castilian monarch.
-
D.
Infante Ferdinand of Spain
Infante Ferdinand of Spain was an 18th-century Spanish prince of the Bourbon dynasty, known as the son of King Charles III and a prominent member of the Spanish royal family.
-
E.
Peter of Castile
Peter of Castile, also known as Peter the Cruel or Peter the Just, was the 14th-century king of Castile and León whose turbulent reign was marked by civil war, shifting alliances, and a lasting reputation for both brutality and administrative reform.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
Castilian nobleman
ⓘ
infante of Castile ⓘ |
| allegiance | Kingdom of Castile NERFINISHED ⓘ |
| associatedPlace | Ledesma NERFINISHED ⓘ |
| associatedWith | royal court of Castile NERFINISHED ⓘ |
| birthOrder | younger son of Ferdinand III of Castile ⓘ |
| centuryOfActivity | 13th century ⓘ |
| continent | Europe ⓘ |
| country | Kingdom of Castile NERFINISHED ⓘ |
| dynasty | House of Ivrea NERFINISHED ⓘ |
| father | Ferdinand III of Castile NERFINISHED ⓘ |
| floruit | 13th century ⓘ |
| gender | male ⓘ |
| house | Castilian branch of the House of Ivrea NERFINISHED ⓘ |
| languageOfEnvironment | Old Castilian NERFINISHED ⓘ |
| lordshipOver | Ledesma NERFINISHED ⓘ |
| monarchFather | Ferdinand III of Castile NERFINISHED ⓘ |
| nobleFamily | Castilian House of Ivrea NERFINISHED ⓘ |
| nobleTitle | Lord of Ledesma NERFINISHED ⓘ |
| notableFor |
being a younger son of King Ferdinand III of Castile
ⓘ
holding the lordship of Ledesma ⓘ |
| parent | Ferdinand III of Castile NERFINISHED ⓘ |
| positionHeld | Lord of Ledesma NERFINISHED ⓘ |
| realm | Crown of Castile NERFINISHED ⓘ |
| region | Iberian Peninsula ⓘ |
| relativePositionInSiblings | younger son GENERATED ⓘ |
| socialClass | high nobility ⓘ |
| territorialLordship | town of Ledesma ⓘ |
| timePeriod | Middle Ages ⓘ |
| titleHeld | Lord of Ledesma 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: Ferdinand of Castile, Lord of Ledesma Description of subject: Ferdinand of Castile, Lord of Ledesma, was an infante of Castile and nobleman of the 13th century, known primarily as a younger son of King Ferdinand III who held lordship over the town of Ledesma.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ferdinand of Castile, Lord of Lemos