1870 KY Census (Ancestry.com): Samuel Clark (26 VA) living next door to father in Maggard, Perry Co. with wife, Viney (22 KY); two sons: Henderson (3 KY) and Alexander (1 KY) and domestic servant, Dolly Brook (17).
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): Alexander Clarkston (b. Apr 1869 KY), Lodger in house of Carl Tyler in Liff, Logan Co., CO.
1910 U.S. Census (Ancestry.com): Not found.
1920 U.S. Census (Ancestry.com): Not found.
1930 U.S. Census (Ancestry.com): Not found.