I know 3 Rubys - all 20-25, and I don't dislike the name, but I wouldn't call my new little girl Ruby. I can't say why. A cross between going for a Ruby Murray (curry,) Ruby by the Kaister Chiefs, and I'm just not a massive fan of the name for a little girl now. Can't articulate why sorry @RA1988
I don't know one single person who would class it as downmarket though, like the above poster! ^ It's really not.
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