Greek! I love Hermione and Kostas.
EDIT: maybe French actually...so I could use Eponine for a girl!
Greek people aren't actually named Hermione (at least, no one I know in "modern" times), so I'd say you can use it regardless of nationality. :)
Hmm, I would probably say Italian. I love a lot of Italian names like Luca, Lucia, Giovanni, Giada, etc.
OP, my old apartment is actually in your sig pic, hah!