"Illinois, County Marriages, 1810-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KFK7-P4X : 3 March 2016), Alexander Biby and Ruthey Kirkpatrick, 29 Mar 1848; citing Franklin, Illinois, United States, county offices, Illinois; FHL microfilm 1,005,304.
"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MXKQ-NTM : 14 July 2016), Ruth C Biby in household of A G Biby, Pinckneyville, Perry, Illinois, United States; citing enumeration district ED 75, sheet 98A, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 0241; FHL microfilm 1,254,241.
It may be possible to confirm family relationships with Ruth by comparing test results with other carriers of her ancestors' 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 DNA with Ruth: