17th: Archie and Donald

Some time ago I'd noted a Donald FAIRBAIRN entering the States in 1917 with wife Mabel, giving as his "address whence came", that of his brother Archie in Vancouver.

My genealogical ears prick up when I spot unknown Archibald FAIRBAIRNs, but at the time I couldn't place him, or Donald/Mabel.

Happened upon them in my database again today and decided to see what additional information might now be available.

Turned out to be a red herring as far as an Archibald immediately able to be connected to my known FAIRBAIRN families was concerned, but did allow me to connect up three other waifs and strays I'd noted in passing, as being one and the same Archibald.
"Brother Archibald" turned out to be Archibald McDonald Duff FAIRBAIRN, and Donald was St George Donald Frere FAIRBAIRN, both born Sth Africa, sons of William Archibald Shaw FAIRBAIRN, born c 1850 East London, Cape Colony (Sth Africa) and Anna Georgina SMITH born Jamaica.
Although not my immediate family, I'm curious to know whether or not their forbears were from the Scottish Borders, and whether or not there are descendants who may be interested in the FAIRBAIRN dna project, given how inter-related such families are proving to be.