Antipope Clement III
E1104698
UNEXPLORED
Antipope Clement III, originally Guibert of Ravenna, was a rival claimant to the papacy during the Investiture Controversy, backed by Holy Roman Emperor Henry IV against the legitimate popes of his time.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Antipope Clement III canonical | 2 |
| Antipope | 1 |
| Clement III (antipope) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T14468560 — 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: Antipope Clement III Context triple: [Pope Victor III, opponent, Antipope Clement III]
-
A.
Antipope Anacletus II
Antipope Anacletus II was a 12th-century Roman nobleman who, in a major schism, claimed the papacy in opposition to Pope Innocent II and was backed by powerful Italian factions.
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B.
Antipope Felix II
Antipope Felix II was a 4th-century cleric installed in opposition to Pope Liberius during the Arian controversy, later regarded by the Catholic Church as an illegitimate pope.
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C.
Antipope Victor IV
Antipope Victor IV was a 12th-century claimant to the papacy, backed by Holy Roman Emperor Frederick I Barbarossa in opposition to the legitimate Pope Alexander III during a major schism in the Catholic Church.
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D.
antipope Felix V
Antipope Felix V was the last historical antipope, a 15th-century Duke of Savoy who was elected by the Council of Basel in opposition to Pope Eugene IV.
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E.
Honorius II (antipope)
Honorius II was an 11th-century antipope who opposed the legitimate papacy during the Investiture Controversy, continuing the imperial-backed schismatic line after Clement III.
- 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: Antipope Clement III Target entity description: Antipope Clement III, originally Guibert of Ravenna, was a rival claimant to the papacy during the Investiture Controversy, backed by Holy Roman Emperor Henry IV against the legitimate popes of his time.
-
A.
Antipope Anacletus II
Antipope Anacletus II was a 12th-century Roman nobleman who, in a major schism, claimed the papacy in opposition to Pope Innocent II and was backed by powerful Italian factions.
-
B.
Antipope Felix II
Antipope Felix II was a 4th-century cleric installed in opposition to Pope Liberius during the Arian controversy, later regarded by the Catholic Church as an illegitimate pope.
-
C.
Antipope Victor IV
Antipope Victor IV was a 12th-century claimant to the papacy, backed by Holy Roman Emperor Frederick I Barbarossa in opposition to the legitimate Pope Alexander III during a major schism in the Catholic Church.
-
D.
antipope Felix V
Antipope Felix V was the last historical antipope, a 15th-century Duke of Savoy who was elected by the Council of Basel in opposition to Pope Eugene IV.
-
E.
Honorius II (antipope)
Honorius II was an 11th-century antipope who opposed the legitimate papacy during the Investiture Controversy, continuing the imperial-backed schismatic line after Clement III.
- F. None of above. chosen
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Clement III (antipope)
this entity surface form:
Antipope