The gens Gellia was a plebeian family at ancient Rome, where they settled after the Second Punic War[i] or earlier.
Another general, Gellius Egnatius, fought against Rome during the Third Samnite War.
The family does not appear to have settled at Rome before the end of the Second Punic War, but probably arrived soon afterward.
[1] The former surname means "white" or "light grey", most likely referring to someone with very light hair, or hair that had become preternaturally white; it belongs to a large class of cognomina derived from the physical characteristics of an individual.
[5] This surname may have entered the Gellia gens because Lucius Gellius Poplicola, the consul of 72 BC, was descended from the Valerii, or because he married into the Valerii, or perhaps adopted his son, the consul of 36 BC, from the Valeria gens.