This is getting a bit old now but the following link http://homepages.rootsweb.com/~clopton/william2.htm MAY give you some helpful information
Cheers Ross Geissmann
U.S., Social Security Applications and Claims Index, 1936-2007
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However I was unable to find any more information on that surname. I would recommend if your gonna do a profile that it be placed as Unknown with an "Other Last name as Marue" until more definitive information can be found. The 1920 Census says her parents where born in South Carolina however doesn't show names.