Prince Kyril of Bulgaria
E409566
Prince Kyril of Bulgaria is a Spanish-born financier and environmental advocate, best known as the second son of Bulgaria’s last tsar, Simeon II, and a prominent member of the former Bulgarian royal family.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Prince Kyril of Bulgaria canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3806601 — 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: Prince Kyril of Bulgaria Context triple: [Bulgarian royal family, member, Prince Kyril of Bulgaria]
-
A.
Simeon II of Bulgaria
Simeon II of Bulgaria is the former Tsar of Bulgaria who later returned to the country as a democratic politician and served as its prime minister.
-
B.
Peter IV of Bulgaria
Peter IV of Bulgaria was a medieval Bulgarian tsar who played a key role in the restoration of Bulgarian independence and the establishment of the Second Bulgarian Empire in the late 12th century.
-
C.
Samuel of Bulgaria
Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
-
D.
Peter I of Bulgaria
Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
-
E.
Alexander I of Bulgaria
Alexander I of Bulgaria was the first modern ruler of an autonomous Bulgaria after Ottoman rule, reigning as prince from 1879 to 1886 during the formative years of the Bulgarian state.
- 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: Prince Kyril of Bulgaria Target entity description: Prince Kyril of Bulgaria is a Spanish-born financier and environmental advocate, best known as the second son of Bulgaria’s last tsar, Simeon II, and a prominent member of the former Bulgarian royal family.
-
A.
Simeon II of Bulgaria
Simeon II of Bulgaria is the former Tsar of Bulgaria who later returned to the country as a democratic politician and served as its prime minister.
-
B.
Peter IV of Bulgaria
Peter IV of Bulgaria was a medieval Bulgarian tsar who played a key role in the restoration of Bulgarian independence and the establishment of the Second Bulgarian Empire in the late 12th century.
-
C.
Samuel of Bulgaria
Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
-
D.
Peter I of Bulgaria
Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
-
E.
Alexander I of Bulgaria
Alexander I of Bulgaria was the first modern ruler of an autonomous Bulgaria after Ottoman rule, reigning as prince from 1879 to 1886 during the formative years of the Bulgarian state.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Bulgarian prince
ⓘ
environmental advocate ⓘ financier ⓘ human ⓘ |
| birthDate | 1964-07-11 ⓘ |
| birthPlace |
Madrid
ⓘ
surface form:
Madrid, Spain
|
| child |
Prince Tassilo of Bulgaria
NERFINISHED
ⓘ
Princess Mafalda of Bulgaria ⓘ Princess Olimpia of Bulgaria ⓘ |
| countryOfCitizenship |
Bulgaria
ⓘ
Spain ⓘ |
| degree | Bachelor’s degree in physics ⓘ |
| educatedAt |
Eton College
ⓘ
Princeton University ⓘ |
| ethnicGroup |
Bulgarian
ⓘ
Spanish ⓘ |
| familyName | Sakskoburggotski ⓘ |
| father | Simeon II of Bulgaria ⓘ |
| fieldOfStudy | physics ⓘ |
| givenName |
Kyril, Prince of Preslav
ⓘ
surface form:
Kyril
|
| honorificTitle |
Kyril, Prince of Preslav
ⓘ
surface form:
Prince of Preslav
|
| languageSpoken |
Bulgarian
ⓘ
English ⓘ Spanish ⓘ |
| marriageEnd | separated circa 2009 ⓘ |
| marriageStart | 1989 ⓘ |
| memberOf |
Bulgarian royal family
ⓘ
House of Saxe-Coburg and Gotha ⓘ
surface form:
House of Saxe-Coburg and Gotha-Koháry
|
| mother | Margarita Gómez-Acebo y Cejuela ⓘ |
| name |
Kyril, Prince of Preslav
ⓘ
surface form:
Kyril Sakskoburggotski
|
| notableFor |
advocacy on environmental and sustainability issues
ⓘ
being the second son of Simeon II, last Tsar of Bulgaria ⓘ role in European high society and philanthropy ⓘ work in international finance ⓘ |
| notableRelative |
Boris III of Bulgaria
ONNED1
ⓘ
Ferdinand I of Bulgaria ⓘ |
| occupation |
environmental advocate
ⓘ
financier ⓘ investment banker ⓘ |
| participatesIn | environmental and sustainability initiatives ⓘ |
| positionHeld |
Kyril, Prince of Preslav
ⓘ
surface form:
Prince of Preslav
|
| religion | Eastern Orthodox Christianity ⓘ |
| residence |
London, England
ⓘ
surface form:
London, United Kingdom
|
| sibling |
Kardam, Prince of Tarnovo
ⓘ
Konstantin, Prince of Vidin ⓘ
surface form:
Konstantin-Assen, Prince of Vidin
Kubrat, Prince of Panagyurishte ONNED1 ⓘ Kalina of Bulgaria ⓘ
surface form:
Princess Kalina of Bulgaria
|
| spouse | Rosario Nadal ⓘ |
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: Prince Kyril of Bulgaria Description of subject: Prince Kyril of Bulgaria is a Spanish-born financier and environmental advocate, best known as the second son of Bulgaria’s last tsar, Simeon II, and a prominent member of the former Bulgarian royal family.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.