I can't believe that there are so many David Murray's. When I came across your queries I so wished that I have found someone with the same family as mine. My David Murray was born in 1852 in Closeburn Dumfrieshire and married Mary Geddes and had Robert, Elizabeth and Mary and secondly Jessie Fergusson and they had Sarah, Janet and my grandmother Annie Jane. My grandmother married my grandfather James Drummond in Kilmarnock in 1919 and went to live in Fife (where I was born). Coincidently I now live in Kilmarnock.
I recently found out that Robert Murray married a Janet Barbour from New Cumnock in 1900 and they had a son, David born in 1909. I would now like to find their descendants.