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Mamercus Aemilius Mamercinus was a political figure in the Roman Republic, serving as consular tribune in 438 BC and dictator three times in 437, 434, and 426 BC.[1]

His first and third dictatorships involved wars against the Veintines and Fidenates. He was victorious both times, capturing Fidenae in 426 BC.

His second dictatorship in 434 BC was occasioned by fear of an impending war with Etruria, but that war never materialized. Aemilius Mamercinus instead used his office to propose cutting the term of the censors from five years to eighteen months. This change was vigorously opposed by the senate but loved by the people, so he submitted the lex Aemilia de censura minuenda to the Tribal Assembly, which approved it.[2] In retaliation, the censors used the power of their office to strike him from his tribe, increase his tax burden eight-fold, and brand him an aerarian.[3]


  1. ^ Smith, William, ed. (1870) [1849]. Dictionary of Greek and Roman Biography and Mythology. Boston: Little, Brown, and Company. vol. II, p. 910.
  2. ^ Hartfield, Marianne (1982). The Roman Dictator. Ph.D. dissertation, University of California, Berkeley. pp. 54–55.
  3. ^ Livy, Titus. Ab urbe condita. 4.23–24.
Political offices
Preceded by
Agrippa Menenius Lanatus,
and Titus Quinctius Capitolinus Barbatus VI

as Consuls of the Roman Republic
Consular Tribune of the Roman Republic
with Lucius Julius Iulus
Lucius Quinctius Cincinnatus
Succeeded by
Marcus Geganius Macerinus III,
and Lucius Sergius Fidenas

as Consuls of the Roman Republic