For a company as old as Nintendo, they have only had 4 presidents...how weird...
Fusajiro Yamauchi: 1889-1929
Sekiryo Kaneda (Yamauchi): 1929-1949
Hiroshi Yamauchi: 1949-2002
Satoru Iwata: 2002-present.
I often forget how long Hiroshi was actually president. After reading the book Game Over and all the business ventures he went through with Nintendo over the decades, it's still hard to believe he only retired 3 years ago.
I read David Sheff's book Game Over last year (and my manager still has my copy he borrowed and keeps forgetting to bring it back!!) so I knew this, but Wikipedia reminded me about it. Man, Wikipedia rocks. You can look anything up.