The three great patrician families of the Quinctia gens bore the cognomina Capitolinus, Cincinnatus, and Flamininus.
The eldest branches of the gens, those that bore the surnames Capitolinus and Cincinnatus, may have sprung from two brothers, Titus Quinctius Capitolinus Barbatus, six times consul, and Lucius Quinctius Cincinnatus, twice dictator, two of the greatest men of their age.