John was born about 1830. He was the son of Unknown McEnnis. He passed away after 1900.
Sources
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MDZP-4SC : 12 April 2016), John Mcennis in household of Elizabeth Mcennis, St. Louis, ward 6, St. Louis, Missouri, United States; citing family 623, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:V5PC-627 : 12 April 2016), John Mc Ennis in household of Elizabeth Mc Ennis, St Louis, 6th Ward, St Louis, Missouri, United States; citing family 622, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4XL-XDJ : 12 April 2016), J F Mcennis, Missouri, United States; citing p. 61, family 432, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,308.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6FF-5HV : 16 August 2017), John F Mc Ennis, St Louis, St Louis, Missouri, United States; citing enumeration district ED 22, sheet 404D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0718; FHL microfilm 1,254,718.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M6F1-QWW : 16 August 2017), J F Mcennis, St Louis, St Louis, Missouri, United States; citing enumeration district ED 59, sheet 464A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0727; FHL microfilm 1,254,727.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M3DH-DX9 : accessed 8 November 2017), John L Mcinnis, Precinct 3 St. Louis city Ward 24, St. Louis, Missouri, United States; citing enumeration district (ED) 358, sheet 28B, family 582, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,899.
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