1851 census - "Scotland Census, 1851," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VYBP-ZRQ : 13 October 2014), Andrew Fairbairn, St Andrews, Fife, Scotland; from "1851 England, Scotland & Wales census," database and images, findmypast (http://www.findmypast.com : 2012); citing p. 2, PRO HO 107, The National Archives UK, Kew, Surrey; FHL microfilm 1,042,253.
Marriage Record - 1859 - "Ireland Marriages, 1619-1898," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FGCY-4BJ : 12 December 2014), Andrew Fairbairn and Jane Bolster, 08 Oct 1859; citing Cork, Cork, Ireland, reference 555; FHL microfilm 101,405.
It may be possible to confirm family relationships with Andrew 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 Andrew: