Satoshi Nakamoto is a pseudo name to cover who the real creator is, and since the name sounds or similar to Japanese name many thinks Satoshi originates from Japan. Up to this day, nobody knows who really created bitcoin and I think this will remain as a mystery for a long-time, or maybe forever. There had been a lot of claim to satoshi's creation, but a lot failed to provide proof. I guess it's best to remain that way since Satoshi really intends to remain anonymous leaving no proof of his real identity.