Probably good if you get some units on SP
www.scotlandspeople.gov.uk that will help you work back further.
James' birth cert should include the date and place of his parents marriage to help you with your research.
Just from the main search page (you need to view the whole original image) for 1911, this could be the family in St Nicholas, Aberdeen City:
David 33
Caroline 35
David 15
Eleanor 14
Alexr 6
Mary A 3
Elsie B 1
Monica:
PS: Carol, he does make you smile doesn't he. I do the same when I see it, often look up and smile with him. First Christmas without him...