He's listed in the 1851 census as being born in Perthshire, but its not very specific about where. He lived in the Balgrochan, Lennoxtown area of Campsie parish for a good number of years before following work and his sons to Lanarkshire and West Lothian. I can't find any siblings at the moment. His first daughter is a Jean (not Jane), so I wonder if that was his mother or perhaps his wife Marion Hume's mother.
Family Search is a great tool, I've found out a few things from it over the past week.