Further to previous message concerning the children of John Maxwell Calton and Henrietta Jane Calton (nee Bryers). There were in fact 9 children and not 8. I had thought that the third son was Robert Beresford Calton, born in 1879. In fact his name was Richard Beresford Calton, his birth registered in Hutchistown, Glasgow on 10 Dec 1879.
There was actually an earlier son, the first, Robert born around 1871. He is listed in the 1881 census as 10 years old. So Richard Beresford Calton was in fact the 4th son.