Hi
Further to Terianne's posting, both Isabella and Joseph were down as being born Berwick on Tweed on the 1851 census HO107/458/38 They seem to have lived in Berwick on Tweed throughout. Berwick on Tweed is in Northumberland, England.
brevitas
added - in 1841, they are in Berwick upon Tweed - both born Northumberland HO107/844/1/32/20