Albert Einstien
Marie curies
Alan turing
Michelangelo
Leonardo Da Vinci (he was in fact ambidextrous)
Douglas Adams
Mark Twain
HG Wells
Jimi Hendricks
David Bowie
Adolf Hitler (not a great example I know but he was)
Isaac Newton
My fingers hurt now
is that enough clever people for you?
most of them the cleverest people EVER