In my senior year in High School, I wrote a short fantasy story in fulfillment of an English class assignment. The teacher asked my okay to submit it to a magazine. To my surprise, it was bought & published by "Thrilling Wonder Stories" -- a pulp magazine that published fantasies. I got $250 for it -- that was a LOT for a teen age kid back in those days.
The lead character was an age-12 boy who was a street urchin. The boy had been deserted by his parents as a toddler. He was taken in & raised by an old hag who died when he was 11 years old, so he lived on the streets after that, surviving by stealing & begging.
I named him Bellgamin. "Gamin" means an urchin. I took "bell" from the "bell, book, & candle" of magic-users. Bellgamin gradually became aware that he had magical powers and --- the game was on -- ~24 pages long.
So that's how I got my user name. Sadly, my own magical powers have never fully developed. Kazam!