Spock's mother's full {maiden} name is
Amanda Grayson. Robin's real name is
Dick Grayson.
That's circumstantial proof 1. Or is it “proof”?
Circumstantial proof 2 to possibly back this up is a reference in a TNG episode to the baseball club
Gotham Dynamites.
As in
Gotham City?
Is this “proof” as well?
Then there's the tangent issue here of Spock possibly, if not probably, definitely{?}, being a descendant of
Arthur Conan Doyle. He is, isn't he? Based on STVI:TUC.
If I'm right then
both Spock & Robin {Dick Grayson} are descendants of Arthur Conan Doyle.
How cool is that?