An update from my research on William Kilgour Jackson, born 14 Mar 1871 in Lamington, South Lanarkshire, Scotland, United Kingdom.
I found that William was related to John Rennie (b 1931) - John formulated the well known indigestion tablets known as 'Rennies'.
And via the 'Mellor' family i have been able to connect William to the wider Wikitree family.