Actually the Roman characters have a dummy surname, Romanvs, which isn't displayed. Thus, someone named Titvs Fabivs Maximvs is internally Titvs Romanvs, and accounting for the plethora of other dummy names in the Roman name pool, he might as well have the first name TitvsA, TitvsB, TitvsC all the way up to TitvsK. So, trying to use console commands may be a bit futile