The Civil War service of Johnston Williams KERR (1836-1921) Johnston Williams Kerr, son of William Kerr and Mary Williams Kerr, served in the 142nd Pennsylvania Infantry from 1862-1864.   Johnston Williams Kerr A reunion of the 142nd Pennsylvania Infantry   Thanks to the USGenWeb volunteers, and Gene Gallagher, who has transcribed records of the 142nd Pennsylvania Volunteer Infantry, for helping me identify this family member and his photos.