I prefer Rio (2) to Rio for a boy. I like the meaning Jasmine more then River. It sounds exotic on a girl. If you wanted you could even call twin girls Jasmine and Rio.
Rio Kishida was a Japanese playwright and director. She wrote several plays about women and the problems they faced in a patriarchal society that run parallel with the second wave of the feminist movement in Japan. Even though she did not strictly identify herself as a feminist, she believed that the system of a male dominated society had to change in order for women to gain equal rights as their male counterpart.
Rio Matsumoto is a Japanese actress, model and singer. She has had a prolific career in television drama series since the mid-1990s and since 2003 has also been in several films. She was formerly known as Megumi Matsumoto.
I wrote my comment nearly 7 years ago and I still love it! Happened to look the name up again while watching the Olympics and had no idea one of its meanings is actually my name (Jasmine). That's pretty cool.