What about unisex names with different spellings to denote gender. I get confused by people changing spellings there...

I am ok with Francis/Frances, Leslie/Lesley but what about Lee/Leigh? I know male and female Leighs. Also Robin/Robyn and Charlie/Charley/Charleigh....any idea? I always used to think there were maybe universal rules i wasn't party to lol!

Bx