Olivia? Octavia? Baby girl help!!

So we are trying to decide a name for our baby girl! We just found out I'm pregnant and already chose a possibly boy name, but I'm stuck on the girls name! Her middle name will be Snow! We thought of Olivia Snow but thought Olivia is such a popular name we aren't sure we want to go with it. so maybe something like Octavia Snow? My first baby is Marcus Knight and if it turns out to be a boy(I feel it's a girl though) he will be Alester James. WHAT do you think? Any names you can think of???