When I signed up for an account on WDC I should have taken the time to see what type of user names were being used beforehand, since I didn't know then that they are not easily changed. Mine isn't all that creative, or maybe I don't feel that it is since I put it together many years ago.
My first name is Marsha. When I was in my late twenties I had some friends and family members that began to call me Sha for short. I really liked that, so the alphabetical part of my username is that nickname. The numbers were taken from my birth year and age when I first had to come up with a username many years ago. I'm talking, in the early nineties.
Actually, that's not quite accurate. Since I was forty-eight when I first made it up, I was born in 1952. That wasn't quite ten years ago. Well 1952 was more than nine years ago, but I was forty-eight in 1999 roughly. Odd, it seems like it's been longer since I've been using that username for my yahoo email to begin with and other places since.