What happened to the GT 500s, a chart with the use or 1st owner (if I understand correctly)

http://www.1967shelbyconvertible.com/research/shelby-prototypes-matrix.asp

in the notes it shows that Edsel Ford II, and Phil Remington, and both of Shelby's sons got one, but then I see names on 3 or 4 cars, like Ken Miller, Jim Riddle, and Ed Casey... so, since I doubt anyone was buying 4 of them... who knows