↑ "Scotland Births and Baptisms, 1564-1950," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XTJ9-RY4 : 10 February 2018), John Caldwell, ; citing Southend, Argyllshire, Scotland, reference - 2:16BJ1FJ, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 1,041,076.
Name: John Caldwell
Baptism Date: 9 Dec 1793
Baptism Place: , Southend, Argyll, Scotland
Father: James Caldwell
FHL Film Number: 1041076
Reference ID: - 2:16BJ1FJ
↑ "Scotland Marriages, 1561-1910," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XTKJ-79D : 10 February 2018), John Caldwell and Margaret Ralston, 29 Mar 1828; citing Southend,Argyll,Scotland, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 1,041,076.
↑ "New York Passenger Lists, 1820-1891," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVPF-7HYL : 11 March 2018), John Caldwell, 1842; citing NARA microfilm publication M237 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm .
Find A Grave: Memorial #53389621 Find A Grave, database and images (https://www.findagrave.com : accessed 17 July 2018), memorial page for John Caldwell (9 Dec 1793–10 Mar 1874), Find A Grave Memorial no. 53389621, citing Scottish Cemetery, Caledonia, Boone County, Illinois, USA ; Maintained by Amelia Crombie-Christy (contributor 46861625) .
It may be possible to confirm family relationships with John 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 John: