I love
Parthenope. It was
Florence Nightingale's sister's name. The TV announcer pronounced it, "par-THEN-uh-pee." Fun, fun, fun.
It reminds me of the Parthenon (sp?) in Athens.
Persephone and
Parthenope both have that Greek-chic that I love.
Persephone is more well known so it would be the "safer" of the two.
I couldn't really choose between the two. I just depends on what you're going to use it for. As a mn, you could indulge a GP like
Parthenope easily. Or, if it's for a pet, go for broke and use
Parthenope. It really depends.