Do you mean:
SS Death Index Ancestry Com
Name: Martin C. Johnson
SSN: #
Last Residence: 92325 Crestline, San Bernardino, California, USA
BORN: 8 Dec 1919
Died: 16 Jan 1994
___________
WW 2 Draft Registration Ancestry Com
Name: Martin Carl Johnson
Gender: Male
Race: White
Age: 21
Relationship to Draftee: Self (Head)
Birth Place: Frazee, Minnesota, USA
Birth Date: 8 Dec 1919
Residence Place: Los Angeles, Los Angeles, California, USA
Registration Date: 1 Jul 1941
Employer: James Compas
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWTY-56X : accessed 26 September 2018), Martin C Johnson in household of Riley J Johnson, Frazee, Becker, Minnesota, United States; citing ED 12, sheet 3A, line 30, family 111, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 823; FHL microfilm 1,820,823.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K9ZJ-PBQ : 15 March 2018), Martin C Johnson in household of Rilky J Johnson, Councilmanic District 15, Los Angeles, Los Angeles Township, Los Angeles, California, United States; citing enumeration district (ED) 60-1230, sheet 62B, line 61, family 304, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 179
"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VGP1-BWR : 26 November 2014), Martin Carl Johnson, 16 Jan 1994; Department of Public Health Services, Sacramento.
If this is him, hope it helps for sources. DNA is out of my hands. I think my genes wear made by Wrangler...LOL