William Fairbairn (abt. 1763 - 1809)

Born about 1763 in Roxburghshire, Scotland

Ancestors

Son of Archibald Fairbairn and [mother unknown]

Husband of Aylsie (Elliott) Fairbairn — married 1787 in Roxburghshire, Scotland

Descendants

Problems/Questions Profile manager: Lorna Henderson [send private message]

Biography

William is estimated to have been born about 1763, probably in Roxburghshire, Scotland.

According to Reby Dodds' 1970 published family history, William supposedly married an Aylsie Elliott in 1787 in Roxburghshire, Scotland. ^[1]

The couple had at least 2 children: ^[1]

John Fairbairn

William Fairbairn

William supposedly died at the age of about 49 in 1809. Please see disambiguation notes.

Research notes

Disambiguation

Many family trees confuse this William with the William schoolmaster at Galashiels, who died 1810 and is buried in Selkirk. (Married to Margaret Scott).

The two families appear to be unrelated on their direct paternal Fairbairn lines (Haplogroup R for the extended family of the schoolmaster, and I for this William married Aylsie)

Parents

I ( Lorna) have just (Dec 2023) shifted William from tentatively belonging to Robert Fairbairn (abt.1729-aft.1771) and Agnes (Landreth) Fairbairn (abt.1730-) to a tentative place-holder parent Archibald Fairbairn (abt.1735-) (a sibling of Robert Fairbairn (abt.1729-aft.1771).

This would make this William himself a sibling of Archibald Fairbairn (abt.1760-aft.1800) and of Isabel (Fairbairn) Oliver (1767-abt.1839).

The rationale being the growing clusters of autosomal DNA matches between descendants of all three of these "siblings", and far fewer between these descendants and descendants of his now uncle, rather than father, Robert (married Landreth)

DNA

yDNA

The Fairbairn Surname DNA project has BigY testers representing both Archibald Fairbairn (abt.1760-aft.1800) and the two known sons of William Fairbairn (abt.1763-1809). They share I-BY21381

To date [Fairbairn-40|Robert Fairbairn (abt.1729-aft.1771)]] is only represented by a y67 test, unable to be upgraded to anything. (Tester wanted! Henderson-2297 10:44, 6 December 2023 (UTC) )

But, this candidate is a close y67 match to the 4 BigY testers.

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.^[2]

atDNA

There is at least one triangulated group (only 11cMs) between descendants of Archibald and William, respectively together with a descendant of Robert married Landreth. ^[3] but the atDNA matches between descendants of Robert with the other lines found to date are a lot less visible than those between the three "children" of placeholder Archibald born about 1735, "sibling" of Roberts. This has yet to be further investigated to see it it can be "walked" back the generations on the correct lines to the respective ancestries of the testers. Henderson-2297 06:49, 9 December 2023 (UTC)

Sources

1. ↑ ^{1.0 1.1} "Who's Which?" author Reby Dodds (1970) FHL Filmed manuscript

   Please bear in mind that many of the earlier family connections in this book have subsequently been proven incorrect. See comments in teal on the Fairbairn One Name Study pages ~~~

2. ↑ 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.

3. ↑ Chr 13 from 74-87 mbp