The Repeated Discovery of William Atreides

Since William Atreides of Terra and Andor was fed as virtually the only food to all those kidnapped to fill the instances of the original universe that had been depopulated in the repeated attacks that originated what came to be know as Fafe Time, his energy signature is incredibly linked to all other energy signatures, and will always be incredibly linked to every soul, because, basically, you are what you eat.

Because his energy signature shows up in dietary analysis for literally everyone's ancestors, he is being repeatedly discovered for the first time by investigating civilizations of all types and situations.

Basically, all those impersonating William Atreides of Terra and Andor energetically are immediately seen as fraudulent by those civilizations discovering him for the first time, because they are only determining his location effectively by exciting entangled projections of his soul, pulling towards his location, just as any other paired entangled bodies would when excited.