Additional stuff on this line.
Janet Kennedy b 9 Oct 1884 to James Aitchison Kennedy and Mary Wemyss Beattie
James Kennedy [her brother] married Christina Elder 17 Jul 1908 Hawick. At this stage he was a sergeant 2nd [battn.?] Black Watch.
No obvious sign of children born to this couple in the area, based on a quick look.
Christina Elder was James' first cousin, b 7 Sep 1881 Wilton to James Elder and Mary Kennedy, who married 1 Jan 1872 Hawick. Mary was daughter of James Kennedy and Elizabeth Pattison and brother of James Aitchison Kennedy senior.
James Kennedy b 26 Dec 1881 died in Palestine 11 Apr 1946. His testament was confirmed the same year:
Confirmations and Inventories 1946
Capt. James Kennedy Black Watch Oakbank Lilliesleaf died on active service in Palestine testate. Confirmation Jedburgh 23 May to Christina Kennedy same address, executrix. Value of estate £1317 12s 6d.
Mary [Kennedy] Elder died in Hawick 26 Dec 1919 and is buried in Wilton cemetery along with her husband who died 29 Dec 1908. I have a photo of the gravestone if you want it.
That's all I have to add for now.
Iain
www.kennedydna.com/kons.htm