11.3
And some of their kings have actually had surnames given them in mockery, as Antigonus Doson and Ptolemy Lathyrus. Surnames of this sort were even more common among the Romans. For instance, one of the Metelli was called Diadematus, because for a long time he suffered from a running sore and went about with a bandage on his forehead; another member of this family was called Celer, because he exerted himself to give the people funeral games of gladiators within a few days of his father’s death, and the speed and swiftness of his preparations excited astonishment.Cf. Romulus, x. 2.
11.4
And at the present day some of them are named from casual incidents at their birth, Proculus, for instance, if a child is born when his father is away from home; or Postumus, if after his death; and when one of twin children survives, while the other dies, he is called Vopiscus. Moreover, from bodily features they not only bestow such surnames as Sulla, Niger, and Rufus, but also such as Caecus and Claudius. And they do well thus to accustom men to regard neither blindness nor any other bodily misfortune as a reproach or a disgrace, but to answer to such names as though their own. This topic, however, would be more fittingly discussed elsewhere.