I still convinced that Satoshi was the late Hal Finney (died in 2014). At least he knew more than he was willing to tell. He is by far the best candidate in my view. Only thing pulling down is the emails between Satoshi and Hal. You got to be really foreseeing and calculating to fake email correspondence between yourself and not be detected in writing analyses. On all other matters, he seems to fit perfect.
Best support for a one man and one that has died, is the million bitcoin on the same account. Either you are terrible rich to begin with, lost your private keys / password or are dead; else the coins would have been accessed at one point. It is also a testimony to the strength / security of the private key. Probably a few 1000 people out there right now trying to get access to this account in one way or another. As long as they remain untouched, you private keys are still very safe. Once movement on the account happens, worry!
I also believe Hal was Satoshi, but who knows. If he could have accessed those coins I believe he would have done it.. After all, he had lots of hospital bills to pay.
Satoshis coins are not in one single address. They are in 20000 different addresses.