Ancestry.com and The Church of Jesus Christ of Latter-day Saints. 1880 United States Federal Census [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2010. Year: 1880; Census Place: Jefferson, Pike, Indiana; Roll: 304; Family History Film: 1254304; Page: 222D; Enumeration District: 170; Image: 0448
It may be possible to confirm family relationships with John by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: