Possible marriage of parents as they appear to be living in Coffee, TN in 1870 census below:
Source: "Tennessee State Marriage Index, 1780-2002," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNZZ-9VR
: 4 December 2014), Robt G Carlisle and Mary A Hall, 01 Mar 1866; from "Tennessee State Marriages, 1780-2002," database and images, Ancestry (http://www.ancestry.com
: 2008); citing p. 34, Coffee, Tennessee, United States, Tennessee State Library and Archives, Nashville, Tennessee.
Tennessee State Marriage Index
: Mary A Hall
: Marriage 01 Mar 1866 Coffee, Tennessee, United States
: Spouse Robt G Carlisle
"United States Census, 1870", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MD82-DZH
: 19 March 2020), America Carlisle in entry for Robert Carlisle, 1870.