Hi,
Found this don't know if you already have it but if not hope it helps.

1851
Mertoun Parish,
Book 2, Page 14
Boghall
James Thomson; Head; Married; 25; Ag Lab; Berwick, Earlston
Jane Thomson; Wife; Married; 26; Midlothian, Stow
James Thomson; Son; 5; Berwick, Kirkhill
Elisabeth Thomson; Daughter; 2; Roxburgh, Sprouston
Agnes Thomson; Daughter; 4 Mo; Berwick, Mertoun
Agnes Stenhouse; Visitor; Unmarried; 14; Farm Servant; Roxburgh, Melrose
(© 1851 Census Data — General Register Office for Scotland. Crown copyright. Reproduced with the permission of the Controller of the HMSO and Queen’s Printer for Scotland.)
Emma