Son of Anthony Quinn and Katherine (Lester) DeMille
Died in childhood, drowned in a pool on the property of film comic W. C. Fields.
"California Birth Index, 1905-1995," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VL59-B7G : 27 November 2014), Christopher Anthony Quinn, 27 Oct 1938; citing Los Angeles, California, United States, Department of Health Services, Vital Statistics Department, Sacramento.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K9C2-3PR : accessed 18 April 2018), Christopher Quinn in household of Anthony Quinn, Councilmanic District 2, Los Angeles, Los Angeles Township, Los Angeles, California, United States; citing enumeration district (ED) 60-176, sheet 2A, line 33, family 49, 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 404.