I use my first two initials and my last name for anything I write, so it's kind of a pseudonym. I don't like my first name all that much.
But, yes, it has a C. S. Lewis air about it, particularly since my first two initials are C and S.
I think it needs a change, though.

I used to use Andy, online, when I was younger.
I always consider picking up another one, but I haven't done it.
A few. Anything non-official online that still needs to sound good, and I go by Drew Martin. It's a knock off of my name and my mother's maiden name, so I don't forget it. 8D And I quite like the name Drew.
However, with all of the cycles I've gone through online, I also respond to Keli and Kuro/ Kuromai, so. xD