Tokugawa, Motomiya, Hashimoto, Hayashi, Kawaguchi, Kobayashi, Matsumoto, Matsushita, Inoue, Nakano, Nishmura... I could go on but literally all you have to do if you need more is google "Traditional Japanese Surnames" and it's like the first or second link.

What names did you have that weren't traditional enough?

BTW, [url=http://i.imgur.com/CrML1Y7.png]here[/url] is the "completed" map. No capitals but at least the country names are on there. If we want anything else we can add it as we go.