You might have to wait until the 1921 census is
published, and find him in Maidstone.
Should give the town of birth, with luck.
I'll be at the Edinburgh archives in a month or so.
could possibly look for McEwan & Douglas there.
(births less than 100 years old can't be viewed on line)
my email can be found through my web pageshttp://homepage.ntlworld.com/phil.bowden
Regards Phil B