Vesper is a unisex choice that seems to lean on the girls’ side. It hasn’t ranked in the US yet, so if you’re thinking of it for a boy, it’s not off limits!
On pretty much any name website you go to, you’ll find that this name may cause the most arguments. (Well, this and Madison). Most people hate the idea, and claim it is ‘trynddeigh’. You may not have heard of James for a girl before recently, but it’s actually not just a new invention.