My birthname started with an R. There is a feminine variant/nickname for it, but it still sounds the same as the masculine as it simply swaps the "y" for an "i." So, in the spoken realm, it sounds the same.
I was a "Jr." and my father was abusive to me, so every time I hear my name I hear his. Talk about a constant emotional trigger! I want NO part of that name any more because as it is easier to remove a thorn from the side than it is to try and tough it out.
My new name starts with E for first, middle, and last names. "Ev" means "age" or "era" in Greek I believe. I am a very symbolic person and have a hard time picking a name just to pick a name. A lot of thought goes into this for me. So each name starts with this prefix (ev) to state a particular "age" of my life.
Since we are all conceived female/X, I chose the last name "Eve" after the archetypical first woman. I have spent 32 years as a biological male so my middle name is "Evan." Now I am returning to the feminine, and chose the first name "Evelyn" because it is what most people will be calling me by. (Ev or Evie also works.) Since the whole world isn't going to know I was a male, "Evan" is hidden unless it is asked for as most people don't ask about people's middle names unless they REALLY want to get to know them. In other circles "ev" means "good" or "well" which I can also fudge a little to fit a personal meaning if I had to.
I also don't mind being called "Ev" because it aknowledges all 3 eras of my life and my adrogynous nature, which is who I am.