Hi, can anyone please help with finding the marriage of my great great grandfather Henry Lang to Barbara Williams, probably in Northam/Appledore in the 1820s.  I have been told by someone else that Barbara was a widow.  The date of this marriage would help me in ascertaining who their children were as I have a feeling that some girls found on the 1841 census were possibly not their children but nieces.  Any help much appreciate.  Many thanks.
Sybella