According to Wikipedia, he also had a meager 125 IQ. That seems a little low for a genius such as him.
Goes to show you that an IQ is about as meaningless as [insert witty analogy here].
He also died at the age of 69 -- more meaningful than any IQ score!
I have a theory that IQ tests (very slightly) handicaps right brain thinkers (ENFPs, ENTPs, INFJ, INTJs etc) - because of their non linear or global thinking styles. I always found that some of the things I answered wrong as a child is because I imagined different interpretations instead of the more obvious meaning of some of the questions. I think ISTPs, INTPs, ENTJs, ESTJs are slightly inflated according to the standard IQ measurements.
Because of my weaker verbal ability (being right brained) - you guys might need some clarification on what I'm rambling about..