"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MXNZ-9GZ : accessed 22 Nov 2012), Mathias Mauk in household of John Mauk, Casey, Clark, Illinois, United States; citing sheet 40C, family 5, NARA microfilm publication T9-0181.
U.S. General Land Office Records, 1796-1907 Clark County, Illinois http://interactive.ancestry.com/1246/RHUSA2007B_IL3060-00127/547170?backurl=http://person.ancestry.com/tree/75893110/person/30384271008/facts/citation/162707762369/edit/record Land bought in Palestine, Illinois.
Source:
Find A Grave: https://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=22954355
Find A Grave did not have exact date of birth just the year.
"United States Federal Census, 1850," http://search.ancestry.com/cgi-bin/sse.dll?db=1850usfedcenancestry&indiv=try&h=15658743&requr=2550866976735232&ur=0&lang=en-US Last name is spelled Mock
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