Re: Early Millers - Germany to Pennsylvania
No, It doesn't appear that your John Miller was the son of George and Maria Barbara Stambach Miller of Codorus Twp, York Co, PA.
According to George Miller's Bible (later passed on to his son Andreas Miller), his son John George Miller was baptized on May 2, 1756. He may have married Mary Baer.
George's twin sons Adam and Michael Miller were born in November 1760, and baptized on January 4, 1761. Their birthdates are only six months after your John Millers birthdate.
I havn't found any evidence that members of this family moved to Virginia.