Now you tell me why two of your links don’t work? I suggest you discuss it all with Seizethecarp. You might have read them all, but dead links aren’t much use in a discussion.
You are the new Johnny Cochran:
If the links are dead
The point goes to Fred.
Hint: whether the links work or not has zero bearing on the central questions.
(1) How much time have you, Fred, spent in Nairobi, interviewing people who knew the Ndesandjos and their son David?
(2) How much time have the people spent whose conclusion you reject out of hand?
(3) Who’s in a better position to know whether he had a brother named David, Mark or you?