Hi Garry, thanks for the reply. Since I started posting on this family the Shetland Islands have started recording family trees and the whole family are now listed. The great great grandfather is James Coutts born 1832. He married twice and migrated with the whole family to nz in the 1870s. He didn’t return to Shetland and died in Dunedin nz in 1906. He didn’t have a son David but had a grandson with that name. Hope that helps.