Annie,
Thanks for your response. My Great-great Grandfather William Robertson was a ironstone/ coalminer. His wife my Great-great Grandmother Margaret nee Rafferty( Rafferdy) Robertson was a Pit Head Worker. They were married on 31 Dec.1868 Kilsyth, Stirlingshire. Each of their occupation I have listed off their marriage certificate. William was born 1845 in Bothwell, Lanarkshire, Scotland. Son of David Robertson1793 – 1851 ( coalminer) & Margaret nee Thomson Robertson 1815 – 1868. William & Margaret had 8 children together born from 1869- 1885 ( born in Airdrie, Bathgate, Linlithgowshire, Uphall, Girtness, Lanarkshire etc.). They have one son, George Rafferty 23 Jan 1864 in Bo'ness,West Lothian, Scotland, whom was either born illegitimate before the marriage or was a stepson to William. I have seen census of 1871 & up to 1901 and all other children are accounted for except for David. I had suspicions he had died early 1871 sometime but can't proof it yet.
The Robertson grandparents were deceased before David was born (as were Rafferty grandparents).
Does this help?
Cheers Lori
Canada