I found all these in the 1881 Scotland Census, are these the correct children. They all seem to have the father Adam Robson.
Isabella Robson
Scotland Census, 1881
Birth: 1867
Residence: Jedburgh, Roxburghshire, Scotland
Margaret Robson
Scotland Census, 1881
Birth: 1862 Roxburgh
Residence: Ladhope, Selkirkshire, Scotland
Elizabeth Robson
Scotland Census 1881
Birth: 1868 Roxburghshire
Residence: Hownam, Roxburghshire, Scotland
Adam Robson
Scotland Census 1881
Birth: 1865 Roxburghshire
Residence: Jeburgh, Roxburghshire, Scotland
John Robson
Scotland Census, 1881
Birth: 1857
Residence: Earlston, Berwickshire, Scotland