Norman Martin, 30 Upper Shader, was a regular soldier in the Scots Guards. For some reason he left the regiment and rejoined later under another name. John Macdonald (he may or may not have used the same address). He was wounded and died the following day in 1916.
I have found a John Macdonald, (11333) Scots Guards, who died 19 June 1916 but place of birth quoted as Glasgow. Maybe; but the connection is not strong enough.