Great post Roberta!
Unfortunately no great tale to mine. Last name being Costello (no relation to Peter), Costa for short. I was going to use my nickname which is Custard, due to the day my English teacher got a bit shirty with me playing up, and in stuffing up the pronounciation of my last name she called me Mr Custard which just stuck. Thought it would be nice to excist in another world (or Fishraider) away from the taunts of that fateful day, so I went with Costa.
Cheers,
Mark