Alexander Bain Stewart's death is also on Family Search
he is 66 in 1950. So he is likely the 1884 birth
There is only one on Scotland's People over 1883-1885.
Mother's surname SMITH ! oh joy.
the marriage is on Family Search too
Incase you haven't used Scotland's people yet :-
https://www.scotlandspeople.gov.uk. Free to register, and then very cheap to purchase images.
Turns out it is quite a common combination of names 
mckha489
many thanks for all of your help and interesting article about the South African's military involvement in Italy in 1944.
I have now signed up at Scotlands People website.
