What did the ancient Romans name their children?

The ancient Romans had set patterns for naming their children. First of all understand that there were generally three names associated with a Roman. They were the praenomen, the nomen and the cognomen. The praenomen was the man's given name or first name, such as Gaius. The second name was the gens or name of the clan, such as Julius. The third name was the cognomen or family name what we would consider a last name, which denoted the stirpes or division of the clan to which the man belonged. In this example it would be Caesar. So the above is Gaius Julius Caesar which says the man is Gaius of the Caesar branch of the Julian clan. Now after all that, the Romans named the first son after the father and any younger sons would be named with praenomens that were commonly used within their family. Daughters were always named with the feminine form of the gens such as Julia (Julius being the masculine form). If a person had more than one daughter, nicknames were used.