> Johnny Cash used to sing a song about a boy named Sue. It seems that Sue's father named him that because it would make him tough and teach him to stand up for himself. But what about real people who have wrong-gender names?

A lot of Finnish men get mistaken for women in international communication because their first names end in an "a". I am one of them, my former boss is another.
My father, Kari, also has a name that is feminine in many other countries, even including our neighbour country Sweden. I haven't asked him how often he has got mistaken for a woman, though.