"United States Census, 1880," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MWS9-SLC : accessed 31 May 2012), Margaret A. Nixon in household of Thomas Nixon, Sault Sainte Marie, Chippewa, Michigan.
Dtr's death - "Michigan, Deaths and Burials, 1800-1995," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FHXN-2S3 : accessed 31 May 2012), Margaret Noble in entry for Martha R. Nixon, 1866.
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