Marcus Octavius (tribune of the plebs, 133 BC)
E721277
Marcus Octavius was a Roman tribune of the plebs in 133 BC best known for opposing and attempting to veto the land reform legislation of his fellow tribune Tiberius Gracchus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Marcus Octavius (tribune of the plebs, 133 BC) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8259876 — 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: Marcus Octavius (tribune of the plebs, 133 BC) Context triple: [gens Octavia, notableMember, Marcus Octavius (tribune of the plebs, 133 BC)]
-
A.
Publius Decius Mus (consul of 279 BCE)
Publius Decius Mus (consul of 279 BCE) was a Roman statesman and general from a distinguished military family who played a leading role in Rome’s struggle against King Pyrrhus of Epirus during the early 3rd century BCE.
-
B.
Lucius Tarquinius Collatinus (as consul)
Lucius Tarquinius Collatinus was one of the first consuls of the Roman Republic, known for his role in overthrowing the monarchy of Lucius Tarquinius Superbus and for resigning under pressure due to his Tarquin lineage.
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C.
Lucius Domitius Ahenobarbus (consul 54 BC)
Lucius Domitius Ahenobarbus was a Roman senator and staunch optimate who served as consul in 54 BC and was a prominent opponent of Julius Caesar during the late Republic.
-
D.
Aulus
Aulus is a common Roman praenomen (given name) frequently used among men in ancient Rome.
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E.
Gaius Papius Mutilus
Gaius Papius Mutilus was a leading Samnite commander and prominent rebel leader during the Roman Social War (91–88 BC).
- 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: Marcus Octavius (tribune of the plebs, 133 BC) Target entity description: Marcus Octavius was a Roman tribune of the plebs in 133 BC best known for opposing and attempting to veto the land reform legislation of his fellow tribune Tiberius Gracchus.
-
A.
Publius Decius Mus (consul of 279 BCE)
Publius Decius Mus (consul of 279 BCE) was a Roman statesman and general from a distinguished military family who played a leading role in Rome’s struggle against King Pyrrhus of Epirus during the early 3rd century BCE.
-
B.
Lucius Tarquinius Collatinus (as consul)
Lucius Tarquinius Collatinus was one of the first consuls of the Roman Republic, known for his role in overthrowing the monarchy of Lucius Tarquinius Superbus and for resigning under pressure due to his Tarquin lineage.
-
C.
Lucius Domitius Ahenobarbus (consul 54 BC)
Lucius Domitius Ahenobarbus was a Roman senator and staunch optimate who served as consul in 54 BC and was a prominent opponent of Julius Caesar during the late Republic.
-
D.
Aulus
Aulus is a common Roman praenomen (given name) frequently used among men in ancient Rome.
-
E.
Gaius Papius Mutilus
Gaius Papius Mutilus was a leading Samnite commander and prominent rebel leader during the Roman Social War (91–88 BC).
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Roman politician
ⓘ
tribune of the plebs ⓘ |
| actedAgainstInterestOf | Tiberius Gracchus’s land commission ⓘ |
| activeInYear | 133 BC ⓘ |
| associatedWithTopic |
Roman agrarian laws
ⓘ
conflict between populares and optimates ⓘ |
| attemptedTo | block land reform legislation ⓘ |
| centuryOfActivity | 2nd century BC ⓘ |
| conflictType | constitutional conflict ⓘ |
| conflictWith | popular sovereignty claims of Tiberius Gracchus ⓘ |
| contemporaryOf | Tiberius Gracchus ⓘ |
| country | Roman Republic ⓘ |
| era | Roman Republic ⓘ |
| ethnicity | Roman ⓘ |
| historicalReputation | opponent of radical reform ⓘ |
| historicalSource |
Appian’s Civil Wars
ⓘ
linked to:
Appian’s Roman History
Plutarch’s Life of Tiberius Gracchus ⓘ
linked to:
Life of Tiberius and Gaius Gracchus
|
| involvedIn |
Roman land reform crisis of 133 BC
ⓘ
linked to:
Gracchan reforms
|
| knownFor |
conflict with Tiberius Gracchus over land reform
ⓘ
opposition to Tiberius Gracchus ⓘ vetoing Tiberius Gracchus’s agrarian reform bill ⓘ |
| legalIssue | limits of tribunician inviolability ⓘ |
| legalPower | right of veto over the Plebeian Assembly ⓘ |
| memberOf | gens Octavia ⓘ |
| nomen | Octavius ⓘ |
| notableEvent | removal from office by vote of the Plebeian Assembly ⓘ |
| notableFor | being the first tribune deposed by popular vote for using veto ⓘ |
| officeStartYear | 133 BC ⓘ |
| opposed |
Tiberius Gracchus
ⓘ
agrarian reforms of Tiberius Gracchus ⓘ |
| politicalAlignment | optimates ⓘ |
| politicalFaction | senatorial aristocracy interests ⓘ |
| politicalRole | representative of the plebeian order ⓘ |
| positionHeld |
tribune of the plebs
ⓘ
tribune of the plebs of the Roman Republic ⓘ |
| praenomen | Marcus ⓘ |
| reasonForRemoval | persistent veto of agrarian law ⓘ |
| removedFromOfficeBy |
Plebeian Assembly
ⓘ
linked to:
Concilium Plebis
|
| socialClass | plebeian ⓘ |
| sphereOfActivity | Roman politics ⓘ |
| status | historical figure ⓘ |
| usedPower | tribunician veto ⓘ |
| usedProcedure | tribunician veto to block legislation ⓘ |
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: Marcus Octavius (tribune of the plebs, 133 BC) Description of subject: Marcus Octavius was a Roman tribune of the plebs in 133 BC best known for opposing and attempting to veto the land reform legislation of his fellow tribune Tiberius Gracchus.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.