You did not answer my questions.
Well, I do not know all the answers of course... You want me to write you exactly who knew, it is absurd to expect that from me. I THINK that his brothers and sisters knew he is alive, not their children and I have impresion it was kept secret from his father.
As I always write, put yourself in the position somebody wants to kill you and you decide to fake your death. Will you say it to everybody or not?
As of the fortune, you have to realize that JFK was aware he was deadly ill. What exact fortune do you think and who got it after his "death"?