I think the census of 1841 I found showing John Hudson and Sarah is wrong, the last person on the census is a Joseph Hudson aged 1. looking on the census it says the maiden name of the mother is Pinder but as yet I have not found a marriage of a John Hudson to a Sarah Pinder.
I did though find a William Hudson (1833) living with the harrison family in 1841 and The Howe family in 1851 ( a Harrison married a Howe by the looks of it) and in 1861 that William Hudson is with Ann and a daughter Sarah A aged 3. William was born in the Crosspool area.
I therefore wonder if both his parents had died hence the reason he wa with relatives.
Do you think now I am on the correct track? Need to find another John and Sarah Hudson on the 1841 census or burial index.