The nomenMetilius appears to belong to a class of gentilicia arising from diminutive versions of other names, originally ending in -ulus. In this case the name might have been the praenomenMettius, or perhaps another nomen, such as that of gens Mettia. The Metilii are mentioned as one of the Alban houses that came to Rome following the destruction of their city in the reign of Tullus Hostilius, the third King of Rome. They were admitted to the senate, implying that they were originally patricians, but all of the Metilii mentioned during the time of the Republic were plebeians.
Branches and cognomina
The Metilii of the Republic do not appear to have been divided into branches, the only surname being Croto, an apparent reference to Crotona, an ancient Greek city in Bruttium, which played an important part in the Second Punic War. Under the Empire, the leading family of the Metilii bore the surname of Nepos, literally "grandson". Several consuls of the late first and second centuries were descended from this family, through both the paternal and maternal lines, and are included here if they bore the nomen Metilius, even though, strictly speaking, some of them belonged to other gentes, such as the Atilii.
Members
Spurius Metilius, tribune of the plebs in 416 BC, together with his colleague, Spurius Maecilius, attempted to pass a law distributing some of the recently acquired public land to the plebeians. This measure was opposed by the patricians, led by Appius Claudius Crassus, who succeeded in convincing the other tribunes to veto the law.
Marcus Metilius, tribune of the plebs in 401 BC, impeached Lucius Verginius and Manius Sergius for having allowed their private feud to result in a calamitous defeat during the siege of Veii the previous year. Metilius and his colleagues continued to press for a distribution of the public land, and forbade the collection of the war-tax, hoping to secure passage of the law.
Publius Metilius P. f. Secundus, consul suffectus in AD 123.
Marcus Atilius M. f. M. n. Metilius Bradua Caucidius Tertullus Claudius Atticus Vibullius Pollio Gauidius Latiaris Atrius Bassus, governor of Africa Proconsularis under the emperor Antoninus Pius.
Marcus Sedatius C. f. Severianus Julius Acer Metillius Nepos Rufinus Tiberius Rutilianus Censor, consul suffectus in AD 153.
Marcus Metilius P. f. Aquillius Regulus Nepos Volusius Torquatus Fronto, consul in AD 157.