Now that you have access to ScotlandsPeople you could look up that 1841 census entry I put in one of my messages, and see whether it reveals any more details about the family. It should say whether each household member was born in Scotland, England, or elsewhere.
Ages are rounded, but they will give you a rough idea so that you can search for bapts on the IGI [FamilySearch.org].
If you post the census information I'll see whether I can find anything further.

Sue