Ooooo I SO love
Romy! Unfortunately my prospective LN starts "Reim" :( :( :(
I'd use
Romy on its own but I also like
Rosemary. I use to like Romilly but it's too 'grumbly' and 'swollen' sounding to me now.
Ramona is ok but Rimona intrigues me more for its meaning. There's also
Roma