Hi again Rhian...sorry to keep confusing you.But I looked again and it seems that the Robert born in 1814 died in 1818 so perhaps a little more research is in order.
I have found another Robert, b. 1813 to William Dewhurst and Alice Cobham.He would be one of their youngest children and it actually makes his age reported in the 1881 census more accurate.
Of course, it undoes the relationship with my ancesters...but I will continue to check as I may have made an error there as well.As I said there are many many in the Whalley area in that timeframe as that is one of the original sites of the first Dewhursts.
Let's stay in touch as we try to sort this out. Sandi