Sergia gens

The gens Sergia was a patrician family at ancient Rome, which held the highest offices of the Roman state from the first century of the Republic until imperial times.

Despite long and distinguished service, toward the end of the Republic the reputation of this gens suffered as a result of the conspiracy of Catiline.

[7][8] The most distinguished family of the Sergii during the latter part of the Republic bore the cognomen Silus, originally describing someone with an upturned nose.

The first of this branch rose to fame during the Second Punic War, but by the time of Catiline, who was his great-grandson, they had fallen into poverty and obscurity.

[11] Meanwhile, Plancus, referring to someone with flat or splayed feet, belongs to a common class of surnames derived from the physical characteristics of the bearer.