Probably Stirlingshire or possibly Perthshire
ie Date - unknown, but old enough to marry in in 1804
most likely contender is the Archibald baptized 1779 To William Henderson and Marrion Robertson who were at Burnbank, Kilmadock, Perthshire at the time - would be great to find proof of this connection Henderson-2297 22:37, 23 June 2017 (EDT)
28 Oct 1804
Banns called Stirling, and Kincardine by Doune, Perth: "Archibald of Stirling Parish, Margaret of Kincardine by Doune" 
16 Feb 1826
Bridge of Allan, Stirlingshire, Scotland
Never thought we'd find when Archibald died, but an Inventory was filed by his widow, two years after he died stating his death date 
Click here for more info on Archibald on Lorna's web pages.
Descendants of Archibald's grandson William show us that Archibald belongs to R1b1, SNP L21, down the L1335 branch, more specifically R-S7361, which branch is estimated to have formed 1050 years ago.
We would love to find genetic matches to help determine Archibald's origins.
for an emerging picture of Archibald's (distant) Y-DNA relatives stuck at the same spot on the R1b tree of mankind.
Autosomal DNA is also providing clues as to likely family connections, several around Perthshire, in a growing number of triangulated groups of matches determined to be connected to either Archibald or his wife Margaret McEWAN.
2016 finally also saw a number of atDNA matches between a descendants of Archibald's son James, a descendant of dtr Margaret, and a descendant of what looked to be Archibald's son William, so we now believe the papertrail research on William's fate has been proven despite his disappearance from records prior to civil registraton.
It may be possible to confirm family relationships with Archibald by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: