"Michigan Births, 1867-1902," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:NQVV-PB3 : 4 December 2014), Elmer Mcgee, 15 Jun 1878; citing item 2 p 136 rn 49, Unadilla, Livingston, Michigan, Department of Vital Records, Lansing; FHL microfilm 2,320,566.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWS5-YD2 : 26 August 2017), Elmer Mc Gee in household of William Mc Gee, Unadilla, Livingston, Michigan, United States; citing enumeration district ED 197, sheet 236A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0592; FHL microfilm 1,254,592.
It may be possible to confirm family relationships with Elmer 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 Elmer: