Opinion on name please!?

I like Lucian best. It's the only one I've actually heard of before. Lachlan and Fynten sound like last names to me though. My last name sounds like a first name so when someone wants my last name I say "Allison" and they say "No your last name?" as if i'm stupid. So my thought is that if you name him Lachlan or Fynten you could run into something simular.