The identity of Margaret Hinshaw was established by a court case, docketed May 15, 1878, in Chatham Co., Book C, page 18. This case involved the heirs of Jesse Hinshaw and his wives, Mary Marshill and Elizabeth Hinshaw.
The bio of Isaac Chamness, son of Margaret, appears to be in error, when it lists Margaret as the daughter of an Isaac Hinshaw,
Sources
Quaker records
court case, docketed May 15, 1878, in Chatham Co., Book C, page 18.
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DNA Connections
It may be possible to confirm family relationships with Margaret by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Margaret:
The "Commemorative Biographical Record of the Counties of Rock, Green, Grant, Iowa and Lafayette, Wisconsin: Containing Biographical Sketches of Prominent and Representative Citizens, and of Many of the Early Settled Families" entry for Isaac Chamness suggests that Margaret (Hinshaw) Chamness was the daughter of Isaac Hinshaw of NC.
https://www.google.com/books/edition/Commemorative_Biographical_Record_of_the/c98qAQAAMAAJ?hl=en