I like most old roman names :)
Antonia is really beautiful. So is
Octavia.
How about:
Calpurnia
HersiliaAquilinaDomitillaFabiolaConstantiaAlypia
Eusebia
Minervina
Caecelia
Pulcheria
Placidia
CorneliaMilonia
Eumachia
EudoxiaAfinia
BibianaAureliaDemetrias
Betitia
HortensiaLucilia
Matidia
Megullia
Messalina
AspasiaRubellia
Sempronia
Theoxena (this one is great, I think it means "God of strangers, foreign god".)
Valeria
and Iaia (not enough syllables, I know, and I'm not even sure sure how to say this - EYE-ah maybe? but she was a female roman painter and ivory engraver, totally awesome. and the name is beautiful).