Many moons ago when I left my native South Yorkshire to find work 'darn sarf' my accent was the cause of constant amusement. Some wideboy commented that I sounded just like Charlie Williams, the comedian. (Some of the older hands may remember him ?? Golden Shot and all that ??).
Anyways, it stuck, I was then always called Charlie, which over the years has been shortened to Chas. I couldn't register with Chas or Chaz so for some reason I chose Chasser..........which I use to register everywhere on-line if not already taken.