Lovell, Rosemary (Faulk). Owen County Cousins. (Harrahan, Louisiana: J. G. Hauser, Inc., 1977). For repository information see: WorldCat
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MHJ1-VJ4 : accessed 1 March 2016), Isaac Fiscus in household of Henry Fiscus, Jefferson, Owen, Indiana, United States; citing family 514, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
It may be possible to confirm family relationships with Isaac by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Isaac: