I'd be much more open to a Myrrhine in a fantasy novel, but it would depend on what kind of fantasy it was. If it was set in a world anchored to our own, such as
Harry Potter where I think names like
Hermione and
Sirius work very well, then that'd be fine, but I'd be completely unimpressed if I saw a fantasy world entirely independent of our own using a name like Myrrhine, or
Jaime or
Jade or whatever. But I don't read much fantasy anyway.
Ottilie
http://www.behindthename.com/pnl/116467