James was the eldest son of William Muir and Margaret Campbell.
He married Margaret Winship Taylor on 29 September 1923
at St Dominics RC Church, Red Barnes, Newcastle Upon Tyne.
Parents of James Robert-
William Scott Muir -
and
Margaret Campbell
siblings of James Robert included -
William Arthur Muir b1897 - died in a tramcar accident in 1902.
Robert Muir b1904.
Frederick Muir b1908 d1956.
Margaret Muir b1910.
Rose Muir b1913 d1940 - civilian casualty of the blitz in WW2.
Albert Muir b1915 d1998
Mary Muir b1920 d1944
John G Muir b1922 d1944