Not sure how much this explains about names in particular, but... http://en.wikipedia.org/wiki/North%E2%80%93South_differences_in_the_Korean_language http://en.

Not sure how much this explains about names in particular, but... http://en.wikipedia.org/wiki/North%E2%80%93South_differences_in_the_Korean_language http://en.wikipedia.org/wiki/North%E2%80%93South_differences...