↑ Information from Beardsley family researcher Nick Dann, 12 Nov 2016.
↑ Tenth Census of the United States, 1880. (NARA microfilm publication T9, 1,454 rolls). Records of the Bureau of the Census, Record Group 29. National Archives, Washington, D.C.; Roll: 1307; Page: 15B; Enumeration District: 058; FHL microfilm: 1255307
It may be possible to confirm family relationships with Bismark by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Bismark: