I had an Indian colleague that only had one name. To fit in with the company she went by a double first name. i.e (I can't remember her Indian name) Jane Jane.
So it was like FNU Raj (if his name was Raj - it wasn't)
The beat goes on. ;-)
Near-miss: the poet William Carlos Williams.
You might call them Bill, but they can decide to call themselves Billy, or Will, or Willy, or William - without the hassle of actually changing their name.
There is also a class thing where naming a kid with a short form is seen as being lower class.
He also graduated from the University of Walla Walla.