Just to be sure is there another John Robert’s??
That is the problem.
It is the 60th most popular last name in the US. And John is in the top ten names for men.
Not as bad as; Smith, Jones, Brown or Johnson but certainly not uncommon.
Not only is it a rather common name, but top results for websearch find some big names like Fox News’s chief White House correspondent, a TN car dealership, and a guy that owns four spas in Ohio. But I would wager it’s either Chief Justice of the Fox guy, the rest aren’t likely politically connected enough.