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Quintus Fabius Ambustus (flourished early 4th century BC) was a military leader of the Roman Republic, and the son of Marcus Fabius Ambustus. In 390 BC, when his father was pontifex maximus, he and his two brothers, Numerius and Caeso, were sent as emissaries to a Gaulish army besieging Clusium. Instead of entering into negotiations, however, the three Fabii gathered their forces and aided the citizens of Clusium in an attack against the Gauls, in which Quintus Fabius himself was said to have killed one of the Gaulish leaders.[1]

Outraged, the Gauls demanded that the senate hand over the three brothers for violating "the law of nations". Instead, all three were honored by election as consular tribunes. Further incensed, the Gauls marched on Rome, defeated the Roman Army in the Battle of the Allia, and sacked the city. In 389 BC he was supposed to have been prosecuted for his actions at Clusium, but died before the trial could take place.[2]

Many scholars believe the entire story of the events at Clusium to be fiction, as Clusium had no real reason to appeal to Rome for help, and the Gauls needed no real provocation to sack Rome. The story, it is hypothesized, exists to provide an explanation for an otherwise unmotivated attack on Rome, and to depict Rome as a bulwark of Italy against the Gauls.[2]

In popular cultureEdit

Quintus Fabius Ambustus was played by Tony Kendall in the 1963 film Brennus, Enemy of Rome.

See alsoEdit


  1. ^ Smith, William (1867). "Ambustus (5)". In William Smith (ed.). Dictionary of Greek and Roman Biography and Mythology. 1. Boston: Little, Brown and Company. p. 141.
  2. ^ a b Drummond, Andrew (1996), "Fabius Ambustus, Quintus", in Hornblower, Simon; Spawforth, Antony (eds.), Oxford Classical Dictionary (3rd ed.), Oxford: Oxford University Press, ISBN 0-19-521693-8, OCLC 45857759

Political offices
Preceded by
Lucius Lucretius Tricipitinus Flavus,
Lucius Furius Medullinus VII
Servius Sulpicius Camerinus,
Agrippa Furius Fusus,
Lucius Aemilius Mamercinus,
and Gaius Aemilius Mamercinus II
Consular Tribune of the Roman Republic
390 BC
with Quintus Sulpicius Longus,
Caeso Fabius Ambustus IV,
Quintus Servilius Fidenas IV,
Numerius Fabius Ambustus II,
and Publius Cornelius Maluginensis IV
Succeeded by
Lucius Valerius Potitus Poplicola II,
Aulus Manlius Capitolinus,
Lucius Verginius Tricostus Esquilinus,
Lucius Aemilius Mamercinus II,
Publius Cornelius,
and Lucius Postumius Albinus Regillensis