Well, I got this one from Knitnana, but I must say, elementary school is always a good indicator for this. We had three girls with my name in the same classroom, and more in the other two, so, how original could it be?
The funny part? My mother's frustration! She'd chosen names for me and my brother some ten years before, and just happened to have her children when these names came into popularity. What was unusual, became common place. (sigh)