What is "mamilia"

The gens Mamilia was a plebeian family at Rome during the period of the Republic. The gens was originally one of the most distinguished families of Tusculum, and indeed in the whole of Latium. It is first mentioned in the time of the Tarquins; and it was to a member of this family, Octavius Mamilius, that Lucius Tarquinius Superbus, the seventh and last King of Rome, betrothed his daughter. The gens obtained Roman citizenship in the 5th century BC, and some of its members must subsequently have settled at Rome, where Lucius Mamilius Vitulus became the first of the family to hold the consulship in 265 BC, the year before the First Punic War.