Cicero (1.3-1.4)

Cicero himself, however, whose Life I now write, when he first entered public life and stood for office and his friends thought he ought to drop or change the name, is said to have replied with spirit that he would strive to make the name of Cicero more illustrious than such names as Scaurus or Catulus.

Moreover, when he was quaestor in Sicily and was dedicating to the gods a piece of silver plate, he had his first two names inscribed thereon, the Marcus and the Tullius, but instead of the third, by way of jest, he ordered the artificer to engrave a chick-pea in due sequence. This, then, is what is told about his name.