Risa, in French, means 'laughter'. In Japanese it means 'Gossamer of the Village'.
Risa Wataya's birth name is Risa Yamada.
Risa Akikawa's birth name is Risa Ito.
Risa Schiffman's birth name is Risa Joy Schiffman.
Risa Junna's birth name is Nakanishi, Junko.
Avril isn't a Japanese word. It's French for April
"Olga" is not a Japanese word or name, so it doesn't mean anything at all in Japanese. Did you mean, "What is the name "Olga" translated to in Japanese?"
Not at all.
"Frances" the name is フランセス (Furansesu); if you mean "France's" (something of France; French) then フランスの (Furansu no).
The name Michelle does not mean anything in Japanese, but can be written: ミシェル
The name 'Collin' does not mean anything in Japanese, but it can be written in Japanese as: コリン
It does not mean anything in Japanese, but can be written: マーラナ
It does not mean anything in Japanese, but it can be written: ビンセント