1880 U.S. Census (Ancestry.com): Samuel H. Clarkston (38 VA) living in Crab Orchard, Lee Co., VA with wife, Elvina (34 KY) and 5 kids: Henderson (12 KY); Alexander (11 KY); son, Areable (8 KY); John C. C. (6 KY); and dau., Nervesta (3 KY).
1900 U.S. Census (Ancestry.com): John Clarkston (Nov. 1872 KY), Boarder in Bridge, Spokane Co., WA.
1920 U.S. Census (Ancestry.com): Not found.
1930 U.S. Census (Ancestry.com): John C. Clarkston (59 KY) living in Spokane, Spokane Co., WA with wife, Ora A. (42 MO), married 25 yrs, with 2 kids: Wanda E. (12 WA) and son, Lyle F. (8 WA).