Josiah was born about 1815. Josiah Spencer ... He passed away about 1871. 
This profile is a collaborative work-in-progress. Can you contribute information or sources?
"United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4FW-ZTB : 12 April 2016), Josiah Spencer, Missouri, United States; citing p. 3, family 16, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,322.
↑ First-hand information as remembered by Joni Anderson, Saturday, July 5, 2014. Replace this citation if there is another source.
It may be possible to confirm family relationships with Josiah by comparing test results with other carriers of his Y-chromosome or his mother's 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 Josiah: