For one thing, Trainman, Mario Segali was not in Japan, he was in the U.S.!
That's the only mistake you made...
Furthermore, it was former president for Nintendo of America, Inc. - Minoru Arakawa - who renamed "Jumpman" to Mario, based on the fact that Miyamoto's character looked a lot like their warehouse's landlord, Mario Segali, who was also an italian-born from Brooklyn!!
I am a pure Super Mario lover!!
...and in no point in the future will he ever be abandonded by me!
I will even drawn the best Super Mario comics ever to exist!!