Cool quiz. I got all the #1 answers right away because they are all on my similar surnames quiz. (though maybe you should accept Coen as an alternate spelling of Cohen, took me a second to figure out what that wasn't being accepted)... but then after that I pretty much bombed on half of these. Between Israel, France and Germany I only got Levi after the #1 answers. I missed two UK names and one Chinese name, but sweeped Mexico.