Comments - Mariano's Naturalization Card from 1905 in Chicago gives his date of Birth as December 25, 1876. However, the California Department of Health Services shows his date of birth as December 2, 1876 as does his 1918 Draft registration in Chicago - which might be the correct date. We have opted to used 'December 2, 1876'.
Sources
"Illinois, Northern District Naturalization Index, 1840-1950," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XKGP-JBW : accessed 30 Jul 2014), Mariano Quattrocchi, 1905; citing Illinois, NARA microfilm publication M1285, roll 143, Federal Archives and Records Center, Chicago; FHL microfilm 1432143.
“Illinois, Cook County Marriages, 1871–1920.” Index. FamilySearch, Salt Lake City, Utah, 2010. Illinois Department of Public Health records. "Marriage Records, 1871–present." Division of Vital Records, Springfield, Illinois.
"United States World War I Draft Registration Cards, 1917-1918", index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K6DF-8HF : accessed 30 Jul 2014), Mariano Quattrocchi, 1917-1918.
"United States Census, 1920," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MHQ7-T8C : accessed 16 June 2012), Marion Quatrochi in household of Marion Quatrochi, Burbank, Los Angeles, California.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/K94B-NBK : accessed 16 Aug 2012), Marion A Quatrochi, Highland Judicial Township, San Bernardino, California, United States; citing enumeration district (ED) 36-48, sheet 18A, family , NARA digital publication T627, roll 289. This location is the Patton State Hospital for the Insane, and Marion is shown as having been here at least since 1935.
"California, Death Index, 1940-1997," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VG56-B3K : accessed 19 Feb 2013), Quatrochi in entry for Marion A Quatrochi, 1941; citing California Department of Health Services, Vital Statistics Section, Sacramento, California. This may mean that Marian A Quatrochi was buried on the premises of the Patton State Hospital as was common practice for that facility in 1941.