Hi Rosie,
Firstly I realised after your reply that it was James Andrew Nelson and wife Margaret. Apologies for mis-information.
Secondly, they were born in 1906 and 1909 respectively. Married in Scotland in 1937. Emigrated to Scotland sometime between then and 1940 as on the Canada 1945 census they are in Newfoundland with their Canada born son, William, who was born in about 1940.
James was from Angus and he and Margaret were married in Newington, Midlothian, Edinburgh.
I have been unable to find a birth record for their son either.
Also looking for records for when they returned to England as I have them in Ealing in 1950.
Thanks for your help and suggestion.
Cheers,
Chris in Aus