Delilah married Richard 6 Nov 1865, so in the earlier Censuses you need to look for Delilah Woods - working on that.
"Tennessee Marriages, 1796-1950," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XDQ2-TTP : 11 February 2018), Richard C. Mc Neeley and Delilah Woods, 06 Nov 1865; citing Obion,Tennessee, reference ; FHL microfilm 1,007,235.
This one comes with an image:
"Tennessee, County Marriages, 1790-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKHM-6R4C : 6 November 2017), Richard C Mcneely and Delilah Woods, 06 Nov 1865; citing Obion, Tennessee, United States, Marriage, p. , Tennessee State Library and Archives, Nashville and county clerk offices from various counties; FHL microfilm 1,007,235.