 After the war, Gibson decided to practice in the mountains of southwest Virginia, rather than the north-central Piedmont region where his father had practiced and later his brother J.C. Gibson was practicing.Voters from 
Pulaski and Giles Counties elected this Gibson to represent them at the Virginia Constitutional Convention of 1868, and voters from his native Culpeper County elected his brother J.C. Gibson as one of their representatives.Gibson moved to Huntington, West Virginia in 1871.