Change FM's names in-game?

After conquering a couple of Carthaginian cities, Lucius Cornelius Scipio got renamed to Lucius Africanus. That's really cool and all but I don't want his sons to be called Africanus too. Is there a way of changing their last name back to "Cornelius Scipio"?

Never mind. After doing a forum search I was able to figure out how to make the cognomen non-hereditary.