Margaret Helen or J. Schreiner

"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MF24-MSL : accessed 18 February 2018), Margaret H Schreiner in household of Peter Schreiner, Norrie, Marathon, Wisconsin, United States; citing ED 23, sheet 2A, line 25, family 23, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1995; FHL microfilm 1,821,995.

"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J1X8-TMS : 20 May 2014), Margaret J Schreiner, 20 Apr 2003; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).

https://old.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Schreiner&GS...

"United States Public Records, 1970-2009," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KBSJ-MJ2 : 23 May 2014), Margaret J Schreiner, Residence, Port Washington, Wisconsin, United States; a third party aggregator of publicly available information.