I don't know the sex, but have loved this name since read it in a novel aged about 12. Never met anyone who has it though.
I always assumed it was pronounced Lee-OH-nee. I know it's different in France/Germany (where it originates), but that doesn't bother me.
I don't want my DD (if it is a D!) to go through life spelling and pronouncing her name for people.
How would you say it? I like unusual names, just not names where you have to spell it out all your life.