Hi Arthur,
I have found a 6 yo John Dobie (1 x B) staying in the Wirral, Cheshire to parents John and Isabella, who were all born in Scotland in the 1841 England census.
I cannot find him in the 1851 English or Scottish census, although there was a 16 yo lodger, but could not prove it was him.
We already posted 1861 Scotland census, now we find him again as John Dobbie (2 x B) in the 1871 English census in Liverpool as a 35 yo Tinsmith with 33 yo wife Jane, son John 13 is a Tinsmith, Helen (Ellen) is 11 Margaret 8, Robert6 all born in Scotland plus Anne 1 born in Liverpool.
They are in Toxteth Park in the 1881 census, and in 18 White St, Liverpool in the 1891 where Jane the wife states that she was born in Liverpool where previously it has stated Scotland.
Perhaps with wife Jane a Liverpool lass, maybe that is why they moved back. I think John's parents maybe John and Isabella from 1841 census.
Tom