Most of us have also had Scarlett O'Hara as a literary figure for longer than our lives, and so the name will seem "valid" for our parents, and any peers. So,

Most of us have also had Scarlett O'Hara as a literary figure for longer than our lives, and so the name will seem "valid" for our parents, and any peers. So, you are more likely to get a "Oh, neat, I haven't met anyone named that" than a "What the heck!?" response.