Paternal relationship is confirmed through Y-chromosome DNA testing. Gordon Roy Fairbairn (1929-2013), FTDNA kit #110935, and his 5th cousin once removed, Earl Millard Fairburn (1924-2007), FTDNA kit #87728, match at a Genetic Distance of 0 on 67 markers thereby confirming their direct paternal lines back to their MRCA John Fairbairn (abt.1705-aft.1742).
Between the BigY timeframes, and the y67 exact match estimates from FTDNA a common ancestor born around 1700 is certainly in the right timeframes currently estimated.[5]
↑ Source: #S1038 Web page members.axion.net/~fairwell/ searched Jan 2003 (no longer active 2021)
↑FTDNA timeframes: At a GD of 0 at y67 FTDNA indicates, with a 95% probability, that the probability the two share a common ancestor born between 1700 and 1950 CE. The most likely year is rounded to 1850 CE.
However, factor in that BigY matches between descendants of the common ancestor for one side of this match show the common haplogroup has an estimated formation of 1770 give or take, where the next branch back on the tree is estimated to have been formed about 1550, with an upper end range of around 1700.
Source: S1038 Corres. FAIRBAIRN/WANLESS, Quebec ex G Roy & Pat F. (BRC, CAN), Recipient: Lorna Henderson (NZ)
Source: S1127 Borders Family History Society Magazine (Galashiels, Roxburghshire, Scotland)
Fairbairn-659 was created by Lorna Henderson through the import of HendRichFBDNA4WTMay2014Final.ged on May 3, 2014. (Reference: F-3 / 32669)
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DNA Connections
It may be possible to confirm family relationships by comparing test results with Roy or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: