Jean-Louis was born in 1922. Jean-Louis Kerouac ... He passed away in 1969. 
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↑ "United States Social Security Death Index," database, FamilySearch: 19 May 2014, John Kerouac, Oct 1969; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
↑ "Florida Death Index, 1877-1998," database, FamilySearch: 25 December 2014, John L Kerouac, Oct 1969; from "Florida Death Index, 1877-1998," index, Ancestry (www.ancestry.com : 2004); citing vol. 3299, certificate number 60145, Florida Department of Health, Office of Vital Records, Jacksonville.
"United States Census, 1940," database with images, FamilySearch: accessed 14 December 2017, John Kerouac in household of B H Kerouac, Ward 6, Lowell, Lowell City, Middlesex, Massachusetts, United States; citing enumeration district (ED) 18-79, sheet 4B, line 44, family 61, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1692.
"Find A Grave Index," database FamilySearch : 13 December 2015, Jack Kerouac, 1969; Burial, Lowell, Middlesex, Massachusetts, United States of America, Edson Cemetery; citing record ID 577, Find a Grave, http://www.findagrave.com.