Hi Bob,
Yes, the jig is most definitely up for that Grifter Griscom with these startling revelations!
As to the rest, you're timing is slightly off. In 1897 when young Hugh Wilson was winning the Club Championship at old Belmont (predecessor to Aronimink), he was but a high school lad of 16.
He attended Princeton from 1898 through 1902 and was there as the new Willie Dunn course was being designed and built and then modified by Princeton Pro James Swan, who also designed the first Lawrenceville School course, 4 holes of which still exist today.
As you may remember, as Captain of the Princeton Golf team, Hugh Wilson was also on the Princeton Green Committee.
With his attendance at Princeton, Wilson's handicap was no longer kept by the Golf Association of Philadelphia, but instead was part of the NY Metropolitan Golf Association, and for a number of years after graduation his handicap showed up under their auspices, not Philadelphia's.
He was back in Philadelphia not too long after and around 1905 or 06, if memory serves, he played for Philly in the Lesley Cup matches, the NY team that year having a couple of guys named Macdonald and Emmet on it. Small world back then.