Mine is pretty simple. Rob is short for my first name Robert. A few years ago I wrote some opinion and guest articles for a couple of different magazines, and in an effort to stay somewhat anonymous and avoid too many kooks calling/bugging me I dropped my last name and just went by my first name and my middle name which is Banks-Rob Banks. But, that didn't work well as I had all sorts of people ask me if Rob Banks was my name, or my profession! So, my pen name was Robert Banks.