Same as my username, and just like it, it isn't. I really don't like giving out that kind of information, although I originally thought it up when I first played Wild World and it has sticked since (because I'm lazy)
I generally don't use my real name in games because it's more fun to be someone else. Not in a depressing way but in an I'm already me let's be someone else for a few minutes.
Yes. I've always used my name as my mayor in every AC game. The other characters are usually named after girls from Harvest Moon as I'm terrible at thinking up names.