Hi
I think I have found them in 1851 in Scotland census ED1, page 11, line 3, roll 804, (some confusion as diff info on index)
10 Crawfordyke st Carluck Lanarkshire
Joseph Blair aged 39 born Ireland handloom weaver
Christina aged 37 born Eccles Berwick
Catherine aged 6
Agnes aged 4
Robert aged 1 born 'Carluck' I think this is Carlisle