Yes, I'm not 100% sure of anything!
He is my mother's father and my grandmother was in a bit of a state when she signed "a" document with his name on, since he was thought to have been killed.
On a document of my mothers it could possibly be Bradie and not Brodie, but that may just be the handwriting. I will contact the GRO soon and ask about a birth certificate. I do most of my research at work - in my "I'm REALLY bored time" - and my office is next to the MD's so I have to be careful...
I have found a marriage of a James Murray Brodie to a Jemima Mary Anderson in Pollockshields, Glasgow on 7 Jun 1916 and they were living at 30 Finart Street, Greenock, Scotland. This may be his parents (its a start). I have not found a marriage of a Bradie to an Anderson.
Back to my original question: his death cert will be held by the GRO in Scotland?