There is a Henry Jamieson who married Margaret Forsyth Anderson St George's, Midlothian which I believe is in Edinburgh, and there is a George Forsyth Jamieson born 1904 same registration district possibly their son. I think this could be a good starting point for you, this is all on Scotlandspeople site which I do not have any credits for at this time. Hope this helps.
I think the 1939 George was a red herring.