I have five entries for a Doubt family in Monroe County.
In 1870, Edward Doubt was listed on the MC Census in Union Township. He was a black male, age 40, farm hand, born in Virginia, with his wife Jane A. (38), and his children Andy (13), Jeremiah (4), and Maria (1). Jane was a domestic servant. They must have moved out of the area after 1870 as they do not appear in subsequent census reports for Monroe, Greenbrier, Summers, or Pocahontas.