The only name I've ever strongly associated with a particular characteristic is Peter. It was never in contention as ds's name, but no matter how many Peter's (or Pete's for that matter) I meet I always associate the name with fat people. All because one of my dad's oldest friends is Peter and he's very large.
I absolutely do this! If I had a girl there is no way I could call her Gemma as she was the mega-bitch at high school. I would also feel weird using the name of an ex for a child although have no explaination as to why!