Amy, there is a JOHN GIBB listed in the 1798 Direct (window) Tax index. JOHN GIBB: On the Conodoguinet Creek, Hopewell Township, Cumberland County. Log House ( 1 1/2 stories, 18x18 feet, 2 windows and 16 lights) and one barn (20x50 ft) on a total of 150 acres. His neighbor was John Duncan