Thankyou Carol W for your reply. I cannot see a marriage for them in England or Wales, so wondered if they married in Scotland. They appear in the 1851 England census living in Birkenhead, both say born Scotland and with their first child Daniel also born Scotland. Later children all born England. Later Census mentions James born Lanarkshire and Janet (Jessie) bon Midlothian.
The name "Sutherland" was passed to me by a family member. I wonder if it is wrong.