My daughter is named Deborah - I don't think that's ever been used by a male. My son is Timothy - not used by females as far as I am aware. However, my grandson is Daniel, which becomes Danielle for a girl.

Sidonie is an alternative female spelling for Sydney, and maybe Cindy is a corruption? Haven't checked, only guessing!

I understood 'Kim' was short for 'Kimberley', and the spelling is the same for either sex.

My parents' names are Leslie (father) and Evelyn (mother)...

Johnny Cash... 'A Boy Named Sue'...!!